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100 results found for "difference of squares" in Class 10.

दो संख्याओं का अंतर (9) है और उनके वर्गों का योग (481) है। छोटी संख्या क्या है?

The difference between two numbers is (9) and the sum of their squares is (481). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (11)

Step 1

Concept

Let the smaller number be (x), so the larger is (x+9). From (x-2+(x+9)2=481), (x=11).

Step 2

Why this answer is correct

The correct answer is B. (11). Let the smaller number be (x), so the larger is (x+9). From (x-2+(x+9)2=481), (x=11).

Step 3

Exam Tip

छोटी संख्या (x) हो तो बड़ी (x+9) है। (x-2+(x+9)2=481) से (x=11) मिलता है।

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दो धनात्मक संख्याओं के वर्गों का योग (250) है और उनमें अंतर (4) है। बड़ी संख्या क्या है?

The sum of squares of two positive numbers is (250) and their difference is (4). What is the larger number?

Explanation opens after your attempt
Correct Answer

A. (13)

Step 1

Concept

If the smaller number is (x), the larger is (x+4). From (x-2+(x+4)2=250), (x=9), so the larger number is (13).

Step 2

Why this answer is correct

The correct answer is A. (13). If the smaller number is (x), the larger is (x+4). From (x-2+(x+4)2=250), (x=9), so the larger number is (13).

Step 3

Exam Tip

यदि छोटी संख्या (x) है, तो बड़ी (x+4) है। (x-2+(x+4)2=250) से (x=9), इसलिए बड़ी संख्या (13) है।

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दो धनात्मक संख्याओं के वर्गों का योग (130) है और उनमें अंतर (2) है। बड़ी संख्या क्या है?

The sum of squares of two positive numbers is (130) and their difference is (2). What is the larger number?

Explanation opens after your attempt
Correct Answer

A. (9)

Step 1

Concept

If the smaller number is (x), the larger is (x+2). From (x-2+(x+2)2=130), (x=7), so the larger number is (9).

Step 2

Why this answer is correct

The correct answer is A. (9). If the smaller number is (x), the larger is (x+2). From (x-2+(x+2)2=130), (x=7), so the larger number is (9).

Step 3

Exam Tip

यदि छोटी संख्या (x) है, तो बड़ी (x+2) है। (x-2+(x+2)2=130) से (x=7), इसलिए बड़ी संख्या (9) है।

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यदि (p(x)=x-2-6x+8), तो शून्यकों के वर्गों से बना मोनिक बहुपद कौन-सा है?

If (p(x)=x-2-6x+8), which monic polynomial has the squares of its zeroes as zeroes?

Explanation opens after your attempt
Correct Answer

A. \(x^2-20x+64\)

Step 1

Concept

The original zeroes are (2) and (4), so the new zeroes are (4) and (16). The new polynomial is \(x^2-20x+64\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2-20x+64\). The original zeroes are (2) and (4), so the new zeroes are (4) and (16). The new polynomial is \(x^2-20x+64\).

Step 3

Exam Tip

मूल शून्यक (2) और (4) हैं, इसलिए नए शून्यक (4) और (16) हैं। नया बहुपद \(x^2-20x+64\) है।

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यदि (p(x)=x-2-8x+15), तो शून्यकों के वर्गों का योग क्या है?

If (p(x)=x-2-8x+15), what is the sum of squares of its zeroes?

Explanation opens after your attempt
Correct Answer

A. (34)

Step 1

Concept

If the zeroes are \(\alpha,\beta\), then \(\alpha+\beta=8\) and \(\alpha\beta=15\). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=64-30=34).

Step 2

Why this answer is correct

The correct answer is A. (34). If the zeroes are \(\alpha,\beta\), then \(\alpha+\beta=8\) and \(\alpha\beta=15\). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=64-30=34).

Step 3

Exam Tip

यदि शून्यक \(\alpha,\beta\) हैं, तो \(\alpha+\beta=8\) और \(\alpha\beta=15\)। (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=64-30=34)।

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दो क्रमागत धनात्मक विषम संख्याओं के वर्गों का योग (394) है। छोटी संख्या क्या है?

The sum of the squares of two consecutive positive odd numbers is (394). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (13)

Step 1

Concept

If the numbers are (x) and (x+2), then (x-2+(x+2)2=394). This gives (x=13).

Step 2

Why this answer is correct

The correct answer is B. (13). If the numbers are (x) and (x+2), then (x-2+(x+2)2=394). This gives (x=13).

Step 3

Exam Tip

संख्याएँ (x) और (x+2) हों तो (x-2+(x+2)2=394)। इससे (x=13) है।

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दो धनात्मक संख्याओं में अंतर (9) है और उनके वर्गों का योग (585) है। छोटी संख्या क्या है?

Two positive numbers differ by (9) and the sum of their squares is (585). What is the smaller number?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

If the smaller number is (x), then (x-2+(x+9)2=585). This gives (x=12).

Step 2

Why this answer is correct

The correct answer is C. (12). If the smaller number is (x), then (x-2+(x+9)2=585). This gives (x=12).

Step 3

Exam Tip

छोटी संख्या (x) हो तो (x-2+(x+9)2=585)। इससे (x=12) मिलता है।

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दो क्रमागत प्राकृतिक संख्याओं के वर्गों का योग (365) है। वे संख्याएँ कौन सी हैं?

The sum of the squares of two consecutive natural numbers is (365). Which numbers are they?

Explanation opens after your attempt
Correct Answer

C. (13) और (14)(13) and (14)

Step 1

Concept

Take the numbers as (x) and (x+1). From (x-2+(x+1)2=365), we get (x=13).

Step 2

Why this answer is correct

The correct answer is C. (13) और (14) / (13) and (14). Take the numbers as (x) and (x+1). From (x-2+(x+1)2=365), we get (x=13).

Step 3

Exam Tip

संख्याएँ (x) और (x+1) लें। (x-2+(x+1)2=365) से (x=13) मिलता है।

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दो धनात्मक संख्याओं का योग (90) है और उनके वर्गों का योग (4068) है। छोटी संख्या क्या है?

The sum of two positive numbers is (90) and the sum of their squares is (4068). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (42)

Step 1

Concept

Take the numbers as (x) and (90-x). From (x-2+(90-x)2=4068), the numbers are (42) and (48).

Step 2

Why this answer is correct

The correct answer is B. (42). Take the numbers as (x) and (90-x). From (x-2+(90-x)2=4068), the numbers are (42) and (48).

Step 3

Exam Tip

संख्याएँ (x) और (90-x) मानें। (x-2+(90-x)2=4068) से संख्याएँ (42) और (48) मिलती हैं।

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दो लगातार सम धनात्मक संख्याओं के वर्गों का योग (3044) है। बड़ी संख्या क्या है?

The sum of squares of two consecutive even positive numbers is (3044). What is the larger number?

Explanation opens after your attempt
Correct Answer

C. (40)

Step 1

Concept

Consecutive even numbers are (x) and (x+2). From (x-2+(x+2)2=3044), (x=38), so the larger number is (40).

Step 2

Why this answer is correct

The correct answer is C. (40). Consecutive even numbers are (x) and (x+2). From (x-2+(x+2)2=3044), (x=38), so the larger number is (40).

Step 3

Exam Tip

लगातार सम संख्याएँ (x) और (x+2) हैं। (x-2+(x+2)2=3044) से (x=38), इसलिए बड़ी संख्या (40) है।

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दो लगातार विषम धनात्मक संख्याओं के वर्गों का योग (2314) है। छोटी संख्या क्या है?

The sum of squares of two consecutive odd positive numbers is (2314). What is the smaller number?

Explanation opens after your attempt
Correct Answer

C. (33)

Step 1

Concept

Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=2314), (x=33).

Step 2

Why this answer is correct

The correct answer is C. (33). Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=2314), (x=33).

Step 3

Exam Tip

लगातार विषम संख्याएँ (x) और (x+2) होंगी। (x-2+(x+2)2=2314) से (x=33) है।

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दो लगातार धनात्मक पूर्णांकों के वर्गों का योग (1513) है। छोटा पूर्णांक क्या है?

The sum of squares of two consecutive positive integers is (1513). What is the smaller integer?

Explanation opens after your attempt
Correct Answer

C. (27)

Step 1

Concept

If the smaller integer is (x), then (x-2+(x+1)2=1513), giving (x=27). Write consecutive integers as (x) and (x+1).

Step 2

Why this answer is correct

The correct answer is C. (27). If the smaller integer is (x), then (x-2+(x+1)2=1513), giving (x=27). Write consecutive integers as (x) and (x+1).

Step 3

Exam Tip

छोटा पूर्णांक (x) हो तो (x-2+(x+1)2=1513), जिससे (x=27) मिलता है। लगातार पूर्णांकों को (x) और (x+1) लिखें।

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दो धनात्मक संख्याओं का योग (80) है और उनके वर्गों का योग (3232) है। छोटी संख्या क्या है?

The sum of two positive numbers is (80) and the sum of their squares is (3232). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (36)

Step 1

Concept

Take the numbers as (x) and (80-x). From (x-2+(80-x)2=3232), the numbers are (36) and (44).

Step 2

Why this answer is correct

The correct answer is B. (36). Take the numbers as (x) and (80-x). From (x-2+(80-x)2=3232), the numbers are (36) and (44).

Step 3

Exam Tip

संख्याएँ (x) और (80-x) मानें। (x-2+(80-x)2=3232) से संख्याएँ (36) और (44) मिलती हैं।

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दो लगातार सम धनात्मक संख्याओं के वर्गों का योग (2452) है। बड़ी संख्या क्या है?

The sum of squares of two consecutive even positive numbers is (2452). What is the larger number?

Explanation opens after your attempt
Correct Answer

C. (36)

Step 1

Concept

Consecutive even numbers are (x) and (x+2). From (x-2+(x+2)2=2452), (x=34), so the larger number is (36).

Step 2

Why this answer is correct

The correct answer is C. (36). Consecutive even numbers are (x) and (x+2). From (x-2+(x+2)2=2452), (x=34), so the larger number is (36).

Step 3

Exam Tip

लगातार सम संख्याएँ (x) और (x+2) हैं। (x-2+(x+2)2=2452) से (x=34), इसलिए बड़ी संख्या (36) है।

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दो लगातार विषम धनात्मक संख्याओं के वर्गों का योग (2050) है। छोटी संख्या क्या है?

The sum of squares of two consecutive odd positive numbers is (2050). What is the smaller number?

Explanation opens after your attempt
Correct Answer

C. (31)

Step 1

Concept

Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=2050), (x=31).

Step 2

Why this answer is correct

The correct answer is C. (31). Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=2050), (x=31).

Step 3

Exam Tip

लगातार विषम संख्याएँ (x) और (x+2) होंगी। (x-2+(x+2)2=2050) से (x=31) है।

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दो लगातार धनात्मक पूर्णांकों के वर्गों का योग (1201) है। छोटा पूर्णांक क्या है?

The sum of squares of two consecutive positive integers is (1201). What is the smaller integer?

Explanation opens after your attempt
Correct Answer

C. (24)

Step 1

Concept

If the smaller integer is (x), then (x-2+(x+1)2=1201), giving (x=24). Write consecutive integers as (x) and (x+1).

Step 2

Why this answer is correct

The correct answer is C. (24). If the smaller integer is (x), then (x-2+(x+1)2=1201), giving (x=24). Write consecutive integers as (x) and (x+1).

Step 3

Exam Tip

छोटा पूर्णांक (x) हो तो (x-2+(x+1)2=1201), जिससे (x=24) मिलता है। लगातार पूर्णांकों को (x) और (x+1) लिखें।

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दो धनात्मक संख्याओं का योग (65) है और उनके वर्गों का योग (2125) है। छोटी संख्या क्या है?

The sum of two positive numbers is (65) and the sum of their squares is (2125). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (30)

Step 1

Concept

If the numbers are (x) and (65-x), then (x-2+(65-x)2=2125). Solving gives (30) and (35).

Step 2

Why this answer is correct

The correct answer is B. (30). If the numbers are (x) and (65-x), then (x-2+(65-x)2=2125). Solving gives (30) and (35).

Step 3

Exam Tip

संख्याएँ (x) और (65-x) हों तो (x-2+(65-x)2=2125) बनता है। हल से संख्याएँ (30) और (35) मिलती हैं।

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दो लगातार सम धनात्मक संख्याओं के वर्गों का योग (1924) है। बड़ी संख्या क्या है?

The sum of squares of two consecutive even positive numbers is (1924). What is the larger number?

Explanation opens after your attempt
Correct Answer

C. (32)

Step 1

Concept

Let the consecutive even numbers be (x) and (x+2). From (x-2+(x+2)2=1924), (x=30), so the larger number is (32).

Step 2

Why this answer is correct

The correct answer is C. (32). Let the consecutive even numbers be (x) and (x+2). From (x-2+(x+2)2=1924), (x=30), so the larger number is (32).

Step 3

Exam Tip

लगातार सम संख्याएँ (x) और (x+2) मानें। (x-2+(x+2)2=1924) से (x=30), इसलिए बड़ी संख्या (32) है।

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दो लगातार विषम धनात्मक संख्याओं के वर्गों का योग (1570) है। छोटी संख्या क्या है?

The sum of squares of two consecutive odd positive numbers is (1570). What is the smaller number?

Explanation opens after your attempt
Correct Answer

C. (27)

Step 1

Concept

Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=1570), (x=27).

Step 2

Why this answer is correct

The correct answer is C. (27). Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=1570), (x=27).

Step 3

Exam Tip

लगातार विषम संख्याएँ (x) और (x+2) हैं। (x-2+(x+2)2=1570) से (x=27) मिलता है।

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दो लगातार धनात्मक पूर्णांकों के वर्गों का योग (841) है। छोटा पूर्णांक क्या है?

The sum of squares of two consecutive positive integers is (841). What is the smaller integer?

Explanation opens after your attempt
Correct Answer

C. (20)

Step 1

Concept

If the smaller integer is (x), then (x-2+(x+1)2=841), giving (x=20). Write consecutive numbers as (x) and (x+1).

Step 2

Why this answer is correct

The correct answer is C. (20). If the smaller integer is (x), then (x-2+(x+1)2=841), giving (x=20). Write consecutive numbers as (x) and (x+1).

Step 3

Exam Tip

छोटा पूर्णांक (x) हो तो (x-2+(x+1)2=841), जिससे (x=20) मिलता है। लगातार संख्याओं को (x) और (x+1) लिखें।

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दो संख्याओं का योग (26) है और उनके वर्गों का योग (340) है। बड़ी संख्या क्या है?

The sum of two numbers is (26) and the sum of their squares is (340). What is the larger number?

Explanation opens after your attempt
Correct Answer

A. (14)

Step 1

Concept

If one number is (x), the other is (26-x). From (x-2+(26-x)2=340), the numbers are (14) and (12).

Step 2

Why this answer is correct

The correct answer is A. (14). If one number is (x), the other is (26-x). From (x-2+(26-x)2=340), the numbers are (14) and (12).

Step 3

Exam Tip

यदि एक संख्या (x) है, तो दूसरी (26-x) होगी। (x-2+(26-x)2=340) से संख्याएँ (14) और (12) हैं।

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दो धनात्मक संख्याओं का योग (55) है और उनके वर्गों का योग (1525) है। छोटी संख्या क्या है?

The sum of two positive numbers is (55) and the sum of their squares is (1525). What is the smaller number?

Explanation opens after your attempt
Correct Answer

C. (25)

Step 1

Concept

Let the numbers be (x) and (55-x), then (x-2+(55-x)2=1525). Solving gives (25) and (30).

Step 2

Why this answer is correct

The correct answer is C. (25). Let the numbers be (x) and (55-x), then (x-2+(55-x)2=1525). Solving gives (25) and (30).

Step 3

Exam Tip

संख्याएँ (x) और (55-x) हों, तब (x-2+(55-x)2=1525) बनता है। हल से संख्याएँ (25) और (30) मिलती हैं।

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दो लगातार सम धनात्मक संख्याओं के वर्गों का योग (1060) है। बड़ी संख्या क्या है?

The sum of squares of two consecutive even positive numbers is (1060). What is the larger number?

Explanation opens after your attempt
Correct Answer

C. (24)

Step 1

Concept

Let the consecutive even numbers be (x) and (x+2). From (x-2+(x+2)2=1060), (x=22), so the larger number is (24).

Step 2

Why this answer is correct

The correct answer is C. (24). Let the consecutive even numbers be (x) and (x+2). From (x-2+(x+2)2=1060), (x=22), so the larger number is (24).

Step 3

Exam Tip

लगातार सम संख्याएँ (x) और (x+2) मानें। (x-2+(x+2)2=1060) से (x=22), इसलिए बड़ी संख्या (24) है।

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दो लगातार विषम धनात्मक संख्याओं के वर्गों का योग (650) है। छोटी संख्या क्या है?

The sum of squares of two consecutive odd positive numbers is (650). What is the smaller number?

Explanation opens after your attempt
Correct Answer

B. (17)

Step 1

Concept

Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=650), (x=17).

Step 2

Why this answer is correct

The correct answer is B. (17). Consecutive odd numbers are (x) and (x+2). From (x-2+(x+2)2=650), (x=17).

Step 3

Exam Tip

लगातार विषम संख्याएँ (x) और (x+2) हैं। (x-2+(x+2)2=650) से (x=17) मिलता है।

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दो लगातार धनात्मक पूर्णांकों के वर्गों का योग (365) है। छोटा पूर्णांक क्या है?

The sum of squares of two consecutive positive integers is (365). What is the smaller integer?

Explanation opens after your attempt
Correct Answer

C. (13)

Step 1

Concept

If the smaller integer is (x), then (x-2+(x+1)2=365), giving (x=13). Write consecutive integers as (x) and (x+1).

Step 2

Why this answer is correct

The correct answer is C. (13). If the smaller integer is (x), then (x-2+(x+1)2=365), giving (x=13). Write consecutive integers as (x) and (x+1).

Step 3

Exam Tip

छोटा पूर्णांक (x) हो तो (x-2+(x+1)2=365), जिससे (x=13) मिलता है। लगातार पूर्णांकों को (x) और (x+1) लिखें।

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दो संख्याओं का योग (22) है और उनके वर्गों का योग (250) है। बड़ी संख्या क्या है?

The sum of two numbers is (22) and the sum of their squares is (250). What is the larger number?

Explanation opens after your attempt
Correct Answer

A. (15)

Step 1

Concept

If one number is (x), the other is (22-x). From (x-2+(22-x)2=250), the numbers are (15) and (7).

Step 2

Why this answer is correct

The correct answer is A. (15). If one number is (x), the other is (22-x). From (x-2+(22-x)2=250), the numbers are (15) and (7).

Step 3

Exam Tip

यदि एक संख्या (x) है, तो दूसरी (22-x) होगी। (x-2+(22-x)2=250) से संख्याएँ (15) और (7) हैं।

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समीकरण \(6x^2+7x+2=0\) में मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(6x^2+7x+2=0\)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{25}{36} \)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{7}{6}\right\)2-2\cdot\frac{1}{3}=\frac{25}{36}).

Step 2

Why this answer is correct

The correct answer is A. \( \frac{25}{36} \). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{7}{6}\right\)2-2\cdot\frac{1}{3}=\frac{25}{36}).

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta) होता है। यहाँ (\left\(-\frac{7}{6}\right\)2-2\cdot\frac{1}{3}=\frac{25}{36})।

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समीकरण \(4x^2+8x+3=0\) में मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(4x^2+8x+3=0\)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{5}{2} \)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here ((-2)2-2\cdot\frac{3}{4}=\frac{5}{2}).

Step 2

Why this answer is correct

The correct answer is A. \( \frac{5}{2} \). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here ((-2)2-2\cdot\frac{3}{4}=\frac{5}{2}).

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta) होता है। यहाँ ((-2)2-2\cdot\frac{3}{4}=\frac{5}{2})।

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समीकरण \(5x^2+6x+1=0\) में मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(5x^2+6x+1=0\)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{26}{25} \)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{6}{5}\right\)2-2\cdot\frac{1}{5}=\frac{26}{25}).

Step 2

Why this answer is correct

The correct answer is A. \( \frac{26}{25} \). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{6}{5}\right\)2-2\cdot\frac{1}{5}=\frac{26}{25}).

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta) होता है। यहाँ (\left\(-\frac{6}{5}\right\)2-2\cdot\frac{1}{5}=\frac{26}{25})।

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समीकरण \(3x^2+8x+4=0\) में मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(3x^2+8x+4=0\)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{40}{9} \)

Step 1

Concept

If the roots are \(\alpha,\beta\), then (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{8}{3}\right\)2-2\cdot\frac{4}{3}=\frac{40}{9}).

Step 2

Why this answer is correct

The correct answer is A. \( \frac{40}{9} \). If the roots are \(\alpha,\beta\), then (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{8}{3}\right\)2-2\cdot\frac{4}{3}=\frac{40}{9}).

Step 3

Exam Tip

यदि मूल \(\alpha,\beta\) हैं, तो (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta)। यहाँ (\left\(-\frac{8}{3}\right\)2-2\cdot\frac{4}{3}=\frac{40}{9})।

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समीकरण \(2x^2+7x+3=0\) में मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(2x^2+7x+3=0\)?

Explanation opens after your attempt
Correct Answer

A. \( \frac{37}{4} \)

Step 1

Concept

If the roots are \(\alpha,\beta\), then (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{7}{2}\right\)2-2\cdot\frac{3}{2}=\frac{37}{4}).

Step 2

Why this answer is correct

The correct answer is A. \( \frac{37}{4} \). If the roots are \(\alpha,\beta\), then (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). Here (\left\(-\frac{7}{2}\right\)2-2\cdot\frac{3}{2}=\frac{37}{4}).

Step 3

Exam Tip

यदि मूल \(\alpha,\beta\) हैं, तो (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta)। यहाँ (\left\(-\frac{7}{2}\right\)2-2\cdot\frac{3}{2}=\frac{37}{4})।

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मैरीआन की मूर्तियाँ सार्वजनिक चौकों में लगाने का सबसे उपयुक्त कारण क्या था?

What was the most suitable reason for placing statues of Marianne in public squares?

Explanation opens after your attempt
Correct Answer

A. नागरिकों को राष्ट्रीय गणराज्य से जोड़नाTo connect citizens with the national republic

Step 1

Concept

Public squares were part of everyday civic life.

Step 2

Why this answer is correct

Marianne’s statues reminded people of the republic and nation.

Step 3

Exam Tip

Visual symbols helped nationalism reach ordinary citizens. चरण 1: सार्वजनिक चौक जनता के रोजमर्रा के जीवन का हिस्सा थे। चरण 2: वहाँ मैरीआन की मूर्ति लोगों को राष्ट्र की याद दिलाती थी। चरण 3: दृश्य प्रतीक राष्ट्रवाद को जनसामान्य तक पहुँचाते थे।

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राष्ट्रीय प्रतीकों को सार्वजनिक चौकों में लगाने का मुख्य उद्देश्य क्या था?

What was the main purpose of placing national symbols in public squares?

Explanation opens after your attempt
Correct Answer

A. लोगों को साझा राष्ट्र की याद दिलानाTo remind people of the shared nation

Step 1

Concept

Public squares were meeting places for ordinary people.

Step 2

Why this answer is correct

Symbols placed there repeatedly presented national identity.

Step 3

Exam Tip

This built shared memory and loyalty among citizens. चरण 1: सार्वजनिक चौक सामान्य जनता के मिलने के स्थान थे। चरण 2: वहां रखे प्रतीक राष्ट्र की पहचान को बार-बार सामने लाते थे। चरण 3: इससे नागरिकों में साझा स्मृति और निष्ठा बनती थी।

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मैरिआन की प्रतिमाएँ सार्वजनिक चौकों में क्यों रखी गईं?

Why were statues of Marianne placed in public squares?

Explanation opens after your attempt
Correct Answer

A. लोगों को राष्ट्रीय प्रतीक से परिचित कराने के लिएTo familiarise people with the national symbol

Step 1

Concept

Public squares were places where people gathered.

Step 2

Why this answer is correct

Placing statues there took the national symbol to common people.

Step 3

Exam Tip

In exams write this as a way of spreading nationalism. चरण 1: सार्वजनिक चौक लोगों के मिलने की जगह थे। चरण 2: वहाँ प्रतिमा लगाने से राष्ट्रीय प्रतीक आम लोगों तक पहुँचा। चरण 3: परीक्षा में इसे राष्ट्रवाद के प्रसार का साधन लिखें।

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मैरिआन की प्रतिमाएँ सार्वजनिक चौकों में क्यों लगाई गईं?

Why were statues of Marianne placed in public squares?

Explanation opens after your attempt
Correct Answer

A. लोगों को राष्ट्रीय प्रतीक से परिचित कराने के लिएTo familiarise people with the national symbol

Step 1

Concept

Public squares were places where people gathered.

Step 2

Why this answer is correct

Statues there brought the image of the nation to common people.

Step 3

Exam Tip

In exams write this as a method of public awareness. चरण 1: सार्वजनिक चौक लोगों के मिलने के स्थान थे। चरण 2: वहाँ प्रतिमाएँ लगाकर राष्ट्र की छवि को आम लोगों तक पहुँचाया गया। चरण 3: परीक्षा में इसे जनजागरण का माध्यम लिखें।

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अनुक्रम \(5,12,19,26,\ldots\) में पहले दो पदों का अंतर और तीसरे-चौथे पदों का अंतर क्या है?

In \(5,12,19,26,\ldots\), what are the difference of the first two terms and the difference of the third and fourth terms?

Explanation opens after your attempt
Correct Answer

A. (7) और (7)(7) and (7)

Step 1

Concept

The first difference is (12-5=7), and the second is (26-19=7). Equal differences confirm an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is A. (7) और (7) / (7) and (7). The first difference is (12-5=7), and the second is (26-19=7). Equal differences confirm an arithmetic progression.

Step 3

Exam Tip

पहला अंतर (12-5=7) और दूसरा (26-19=7) है। समान अंतर समांतर श्रेढ़ी की पुष्टि करता है।

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एक समांतर श्रेणी का सामान्य अंतर (d) है। \(a_1,a_3,a_5,\ldots\) से बने अनुक्रम का सामान्य अंतर क्या होगा?

An AP has common difference (d). What is the common difference of the sequence \(a_1,a_3,a_5,\ldots\)?

Explanation opens after your attempt
Correct Answer

B. (2d)

Step 1

Concept

The new sequence jumps two original terms each time, so the difference is (2d). In exams, multiply (d) by the term-number jump.

Step 2

Why this answer is correct

The correct answer is B. (2d). The new sequence jumps two original terms each time, so the difference is (2d). In exams, multiply (d) by the term-number jump.

Step 3

Exam Tip

नए अनुक्रम में दो-दो मूल पदों की छलांग है, इसलिए अंतर (2d) है। परीक्षा में पद-संख्या की छलांग को (d) से गुणा करें।

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एक सीमित समांतर श्रेणी का सामान्य अंतर (-6) है। उसे उलटे क्रम में लिखने पर नया सामान्य अंतर क्या होगा?

A finite AP has common difference (-6). What will be the new common difference after writing it in reverse order?

Explanation opens after your attempt
Correct Answer

D. (6)

Step 1

Concept

Reversing changes each step to the opposite sign. In exams, reverse order changes (d) to (-d).

Step 2

Why this answer is correct

The correct answer is D. (6). Reversing changes each step to the opposite sign. In exams, reverse order changes (d) to (-d).

Step 3

Exam Tip

उलटने पर हर कदम का अंतर विपरीत चिन्ह वाला हो जाता है। परीक्षा में उलटा क्रम (d) को (-d) कर देता है।

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एक समांतर श्रेणी का सामान्य अंतर (4) है। पद \(a_2,a_5,a_8,\ldots\) से बने नए अनुक्रम का सामान्य अंतर क्या है?

An AP has common difference (4). What is the common difference of the new sequence \(a_2,a_5,a_8,\ldots\)?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

The new sequence jumps three original terms each time, so its difference is (3d=12). In exams, count the gap between selected term numbers.

Step 2

Why this answer is correct

The correct answer is C. (12). The new sequence jumps three original terms each time, so its difference is (3d=12). In exams, count the gap between selected term numbers.

Step 3

Exam Tip

नए अनुक्रम में हर बार तीन पदों की छलांग है, इसलिए अंतर (3d=12) है। परीक्षा में चुने गए पदों के बीच की दूरी गिनें।

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यदि \(a_n\) का सामान्य अंतर (-9) है और \(b_n=\frac{a_n}{3}+5\), तो \(b_n\) का सामान्य अंतर क्या होगा?

If \(a_n\) has common difference (-9) and \(b_n=\frac{a_n}{3}+5\), what is the common difference of \(b_n\)?

Explanation opens after your attempt
Correct Answer

C. (-3)

Step 1

Concept

Multiplying by \(\frac{1}{3}\) changes the difference from (-9) to (-3), and adding (5) does not change it. In exams, separate the effects of addition and multiplication.

Step 2

Why this answer is correct

The correct answer is C. (-3). Multiplying by \(\frac{1}{3}\) changes the difference from (-9) to (-3), and adding (5) does not change it. In exams, separate the effects of addition and multiplication.

Step 3

Exam Tip

\(\frac{1}{3}\) से गुणा करने पर अंतर (-9) से (-3) हो जाता है, और (5) जोड़ने से अंतर नहीं बदलता। परीक्षा में जोड़ और गुणन के प्रभाव अलग करें।

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यदि \(a_n\) एक समांतर श्रेणी है जिसका सामान्य अंतर (4) है और \(b_n=2a_n-3\), तो \(b_n\) का सामान्य अंतर क्या है?

If \(a_n\) is an AP with common difference (4) and \(b_n=2a_n-3\), what is the common difference of \(b_n\)?

Explanation opens after your attempt
Correct Answer

D. (8)

Step 1

Concept

Multiplying terms by (2) multiplies the difference by (2), so it becomes (8). In exams, adding or subtracting a constant does not change the difference, but multiplication does.

Step 2

Why this answer is correct

The correct answer is D. (8). Multiplying terms by (2) multiplies the difference by (2), so it becomes (8). In exams, adding or subtracting a constant does not change the difference, but multiplication does.

Step 3

Exam Tip

पदों को (2) से गुणा करने पर अंतर भी (2) गुना हो जाता है, इसलिए (8)। परीक्षा में जोड़ना-घटाना अंतर नहीं बदलता, गुणा बदलता है।

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यदि \(1, 5, 9,\ldots\) और \(2, 8, 14,\ldots\) के पद-दर-पद अंतर से नया अनुक्रम बने, तो उसका (d) क्या होगा?

If a new sequence is formed by termwise difference of \(1, 5, 9,\ldots\) and \(2, 8, 14,\ldots\), what will be its (d)?

Explanation opens after your attempt
Correct Answer

A. (-2)

Step 1

Concept

The first sequence has (d=4) and the second has (d=6), so the difference sequence has (d=4-6=-2). In termwise difference, take the difference of common differences.

Step 2

Why this answer is correct

The correct answer is A. (-2). The first sequence has (d=4) and the second has (d=6), so the difference sequence has (d=4-6=-2). In termwise difference, take the difference of common differences.

Step 3

Exam Tip

पहले अनुक्रम का (d=4) और दूसरे का (d=6) है, इसलिए अंतर अनुक्रम का (d=4-6=-2)। पद-दर-पद अंतर में सार्व अंतरों का अंतर लें।

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अनुक्रम \(75,69,63,57,\ldots\) में तीसरे और चौथे पद का अंतर क्या है?

What is the difference between the third and fourth terms of \(75,69,63,57,\ldots\)?

Explanation opens after your attempt
Correct Answer

B. (-6)

Step 1

Concept

The third term is (63) and the fourth is (57), so the difference is (57-63=-6). While finding difference subtract the previous term from the next term.

Step 2

Why this answer is correct

The correct answer is B. (-6). The third term is (63) and the fourth is (57), so the difference is (57-63=-6). While finding difference subtract the previous term from the next term.

Step 3

Exam Tip

तीसरा पद (63) और चौथा (57) है इसलिए अंतर (57-63=-6) है। अंतर निकालते समय अगला पद घटा पिछला पद करें।

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अनुक्रम \(42,39,36,33,\ldots\) में तीसरा और चौथा पद का अंतर क्या है?

What is the difference between the third and fourth terms of \(42,39,36,33,\ldots\)?

Explanation opens after your attempt
Correct Answer

B. (-3)

Step 1

Concept

The third term is (36) and the fourth is (33), so (33-36=-3). While finding the difference subtract the previous term from the next term.

Step 2

Why this answer is correct

The correct answer is B. (-3). The third term is (36) and the fourth is (33), so (33-36=-3). While finding the difference subtract the previous term from the next term.

Step 3

Exam Tip

तीसरा पद (36) और चौथा (33) है इसलिए (33-36=-3)। अंतर निकालते समय बाद वाला पद घटा पहले वाला पद करें।

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अनुक्रम \(6,10,14,18,\ldots\) में दूसरा और तीसरा पद का अंतर क्या है?

What is the difference between the second and third terms in \(6,10,14,18,\ldots\)?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The second term is (10) and the third term is (14), so the difference is (14-10=4). It equals (d).

Step 2

Why this answer is correct

The correct answer is A. (4). The second term is (10) and the third term is (14), so the difference is (14-10=4). It equals (d).

Step 3

Exam Tip

दूसरा पद (10) और तीसरा पद (14) है इसलिए अंतर (14-10=4) है। यह (d) के बराबर है।

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अनुक्रम \(100,90,80,70,\ldots\) में सार्व अंतर कितना है?

What is the common difference in the sequence \(100,90,80,70,\ldots\)?

Explanation opens after your attempt
Correct Answer

C. (-10)

Step 1

Concept

The common difference is (90-100=-10). In a decreasing sequence carefully check the sign.

Step 2

Why this answer is correct

The correct answer is C. (-10). The common difference is (90-100=-10). In a decreasing sequence carefully check the sign.

Step 3

Exam Tip

सार्व अंतर (90-100=-10) है। घटते अनुक्रम में उत्तर का चिह्न जरूर देखें।

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अनुक्रम \(20,15,10,5,\ldots\) में पहला पद और सार्व अंतर क्रमशः क्या हैं?

In the sequence \(20,15,10,5,\ldots\), what are the first term and common difference respectively?

Explanation opens after your attempt
Correct Answer

A. (20) और (-5)(20) and (-5)

Step 1

Concept

The first term is (20) and (15-20=-5). When asked respectively keep the order in mind.

Step 2

Why this answer is correct

The correct answer is A. (20) और (-5) / (20) and (-5). The first term is (20) and (15-20=-5). When asked respectively keep the order in mind.

Step 3

Exam Tip

पहला पद (20) है और (15-20=-5) है। क्रमशः पूछे जाने पर क्रम का ध्यान रखें।

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यदि किसी चित्र में केवल वृत्त और वर्ग हैं तो कौन सा तत्व प्रमुख है?

If a picture has only circles and squares which element is prominent?

Explanation opens after your attempt
Correct Answer

B. आकारShape

Step 1

Concept

Circles and squares are examples of shapes. Exam tip: write flat closed figures as shapes.

Step 2

Why this answer is correct

The correct answer is B. आकार / Shape. Circles and squares are examples of shapes. Exam tip: write flat closed figures as shapes.

Step 3

Exam Tip

वृत्त और वर्ग आकार के उदाहरण हैं। परीक्षा में flat closed figures को shapes लिखें।

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एक द्विअंकीय संख्या में इकाई अंक दहाई अंक से (1) अधिक है। अंकों के वर्गों का योग (61) है। संख्या क्या है?

In a two-digit number, the units digit is (1) more than the tens digit. The sum of the squares of the digits is (61). What is the number?

Explanation opens after your attempt
Correct Answer

B. (56)

Step 1

Concept

If the tens digit is (x), then (x-2+(x+1)2=61). Hence (x=5) and the number is (56).

Step 2

Why this answer is correct

The correct answer is B. (56). If the tens digit is (x), then (x-2+(x+1)2=61). Hence (x=5) and the number is (56).

Step 3

Exam Tip

दहाई अंक (x) हो तो (x-2+(x+1)2=61)। इससे (x=5) और संख्या (56) है।

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एक आयताकार शीट की लंबाई चौड़ाई से (8 cm) अधिक है। प्रत्येक कोने से (2 cm) का वर्ग काटकर मोड़ने पर डिब्बे का आयतन \(240 cm^3\) बनता है। मूल चौड़ाई क्या है?

A rectangular sheet has length (8 cm) more than its breadth. Squares of side (2 cm) are cut from each corner and folded to make a box of volume (240 cm\(^3). What is the original breadth\)?

Explanation opens after your attempt
Correct Answer

B. (12 cm)

Step 1

Concept

Let original breadth be (x), then the box base is ((x-4)(x+4)) and height is (2). From (2(x-4)(x+4)=240), \(x^2=136\), so none of the options is exact.

Step 2

Why this answer is correct

The correct answer is B. (12 cm\(). Let original breadth be (x), then the box base is ((x-4)(x+4)) and height is (2). From (2(x-4)(x+4)=240), (x^2=136), so none of the options is exact.\)

Step 3

Exam Tip

मूल चौड़ाई (x) हो, तो डिब्बे का आधार ((x-4)(x+4)) और ऊँचाई (2) है। (2(x-4)(x+4)=240) से \(x^2=136\), इसलिए विकल्पों में कोई सही नहीं।

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दो क्रमागत विषम धनात्मक पूर्णांकों के वर्गों का योग (394) है। छोटा पूर्णांक क्या है?

The sum of the squares of two consecutive positive odd integers is (394). What is the smaller integer?

Explanation opens after your attempt
Correct Answer

B. (13)

Step 1

Concept

Let the smaller odd integer be (x), then (x-2+(x+2)2=394). This gives \(x^2+2x-195=0\), so (x=13).

Step 2

Why this answer is correct

The correct answer is B. (13). Let the smaller odd integer be (x), then (x-2+(x+2)2=394). This gives \(x^2+2x-195=0\), so (x=13).

Step 3

Exam Tip

छोटा विषम पूर्णांक (x) हो, तो (x-2+(x+2)2=394)। इससे \(x^2+2x-195=0\), इसलिए (x=13)।

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यदि मूलों का योग (6) और उनके वर्गों का योग (52) है तो मूलों का गुणनफल क्या होगा?

If the sum of roots is (6) and the sum of their squares is (52), what is the product of roots?

Explanation opens after your attempt
Correct Answer

A. (-8)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). From \(52=36-2\alpha\beta\), we get \(\alpha\beta=-8\).

Step 2

Why this answer is correct

The correct answer is A. (-8). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). From \(52=36-2\alpha\beta\), we get \(\alpha\beta=-8\).

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta) है। \(52=36-2\alpha\beta\) से \(\alpha\beta=-8\) मिलता है।

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यदि मूलों का योग (4) और उनके वर्गों का योग (20) है तो मूलों का गुणनफल क्या होगा?

If the sum of roots is (4) and the sum of their squares is (20), what is the product of roots?

Explanation opens after your attempt
Correct Answer

A. (-2)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). From \(20=16-2\alpha\beta\), we get \(\alpha\beta=-2\).

Step 2

Why this answer is correct

The correct answer is A. (-2). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta). From \(20=16-2\alpha\beta\), we get \(\alpha\beta=-2\).

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta) है। \(20=16-2\alpha\beta\) से \(\alpha\beta=-2\) मिलता है।

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समीकरण \(x^2-9x+14=0\) के मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(x^2-9x+14=0\)?

Explanation opens after your attempt
Correct Answer

A. (53)

Step 1

Concept

Here \(\alpha+\beta=9\) and \(\alpha\beta=14\). Thus \(\alpha^2+\beta^2=81-28=53\).

Step 2

Why this answer is correct

The correct answer is A. (53). Here \(\alpha+\beta=9\) and \(\alpha\beta=14\). Thus \(\alpha^2+\beta^2=81-28=53\).

Step 3

Exam Tip

यहां \(\alpha+\beta=9\) और \(\alpha\beta=14\) है। \(\alpha^2+\beta^2=81-28=53\) होगा।

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समीकरण \(x^2-7x+10=0\) के मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(x^2-7x+10=0\)?

Explanation opens after your attempt
Correct Answer

A. (29)

Step 1

Concept

Here \(\alpha+\beta=7\) and \(\alpha\beta=10\). Thus \(\alpha^2+\beta^2=49-20=29\).

Step 2

Why this answer is correct

The correct answer is A. (29). Here \(\alpha+\beta=7\) and \(\alpha\beta=10\). Thus \(\alpha^2+\beta^2=49-20=29\).

Step 3

Exam Tip

यहां \(\alpha+\beta=7\) और \(\alpha\beta=10\) है। \(\alpha^2+\beta^2=49-20=29\) होगा।

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समीकरण \(x^2-6x+5=0\) के मूलों के वर्गों का योग क्या है?

What is the sum of squares of the roots of \(x^2-6x+5=0\)?

Explanation opens after your attempt
Correct Answer

A. (26)

Step 1

Concept

Here \(\alpha+\beta=6\) and \(\alpha\beta=5\). Thus \(\alpha^2+\beta^2=36-10=26\).

Step 2

Why this answer is correct

The correct answer is A. (26). Here \(\alpha+\beta=6\) and \(\alpha\beta=5\). Thus \(\alpha^2+\beta^2=36-10=26\).

Step 3

Exam Tip

यहां \(\alpha+\beta=6\) और \(\alpha\beta=5\) है। \(\alpha^2+\beta^2=36-10=26\) होगा।

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दो क्रमागत धनात्मक पूर्णांकों के वर्गों का योग (145) है। यदि छोटा पूर्णांक (x) है, तो समीकरण कौन-सा है?

The sum of squares of two consecutive positive integers is (145). If the smaller integer is (x), which equation is correct?

Explanation opens after your attempt
Correct Answer

A. \(2x^2+2x-144=0\)

Step 1

Concept

The integers are (x) and (x+1), so (x-2+(x+1)2=145). Simplifying gives \(2x^2+2x-144=0\).

Step 2

Why this answer is correct

The correct answer is A. \(2x^2+2x-144=0\). The integers are (x) and (x+1), so (x-2+(x+1)2=145). Simplifying gives \(2x^2+2x-144=0\).

Step 3

Exam Tip

पूर्णांक (x) और (x+1) होंगे, इसलिए (x-2+(x+1)2=145)। सरल करने पर \(2x^2+2x-144=0\) मिलता है।

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दो क्रमागत पूर्णांकों के वर्गों का योग (85) है। यदि छोटा पूर्णांक (x) है, तो समीकरण कौन-सा है?

The sum of squares of two consecutive integers is (85). If the smaller integer is (x), which equation is correct?

Explanation opens after your attempt
Correct Answer

A. \(2x^2+2x-84=0\)

Step 1

Concept

The integers are (x) and (x+1), so (x-2+(x+1)2=85). Simplifying gives \(2x^2+2x-84=0\).

Step 2

Why this answer is correct

The correct answer is A. \(2x^2+2x-84=0\). The integers are (x) and (x+1), so (x-2+(x+1)2=85). Simplifying gives \(2x^2+2x-84=0\).

Step 3

Exam Tip

पूर्णांक (x) और (x+1) होंगे, इसलिए (x-2+(x+1)2=85)। सरल करने पर \(2x^2+2x-84=0\) मिलता है।

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यदि (p(x)=x-2-2x-4) है, तो इसके शून्यकों का वर्गों का योग क्या है?

If (p(x)=x-2-2x-4), what is the sum of squares of its zeroes?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

\(\alpha+\beta=2\) and \(\alpha\beta=-4\), so (\alpha-2+\beta-2=22-2(-4)=12). Symmetric values can be found without finding the zeroes.

Step 2

Why this answer is correct

The correct answer is A. (12). \(\alpha+\beta=2\) and \(\alpha\beta=-4\), so (\alpha-2+\beta-2=22-2(-4)=12). Symmetric values can be found without finding the zeroes.

Step 3

Exam Tip

\(\alpha+\beta=2\) और \(\alpha\beta=-4\), इसलिए (\alpha-2+\beta-2=22-2(-4)=12)। शून्यक निकाले बिना सममित मान निकाल सकते हैं।

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कौन-सा कथन पूर्ण वर्ग और अपरिमेय वर्गमूल के संबंध को सही बताता है?

Which statement correctly relates perfect squares and irrational square roots?

Explanation opens after your attempt
Correct Answer

A. यदि प्राकृतिक संख्या पूर्ण वर्ग नहीं है और अभाज्य है, तो उसका वर्गमूल अपरिमेय होता हैIf a natural number is not a perfect square and is prime, its square root is irrational

Step 1

Concept

(2,3,5) are not perfect squares and are prime.

Step 2

Why this answer is correct

Assuming their square roots rational creates a common-factor contradiction.

Step 3

Exam Tip

Identifying perfect squares is the first task in such questions. चरण 1: (2,3,5) पूर्ण वर्ग नहीं हैं और अभाज्य हैं। चरण 2: इनके वर्गमूल को परिमेय मानने पर साझा गुणनखंड का विरोधाभास मिलता है। चरण 3: पूर्ण वर्ग पहचानना ऐसे प्रश्नों में पहला काम है।

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\(2^5 \times 3^2 \times 7\) के कितने गुणनखंड पूर्ण वर्ग होंगे?

How many factors of \(2^5 \times 3^2 \times 7\) are perfect squares?

Explanation opens after your attempt
Correct Answer

B. 6

Step 1

Concept

In a square factor, every prime exponent must be even.

Step 2

Why this answer is correct

For (2), choices are (0,2,4), giving (3) choices; for (3), choices are (0,2), giving (2); for (7), only (0), giving (1). Total (6).

Step 3

Exam Tip

Count even exponent choices separately. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य की घात सम होनी चाहिए। चरण 2: (2) के लिए (0,2,4) के (3) विकल्प, (3) के लिए (0,2) के (2) विकल्प और (7) के लिए केवल (0) का (1) विकल्प है। कुल \(3 \times 2 \times 1=6\)। चरण 3: सम घातों के विकल्प अलग-अलग गिनें।

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\(2^4 \times 3^2 \times 5\) के कितने गुणनखंड पूर्ण वर्ग होंगे?

How many factors of \(2^4 \times 3^2 \times 5\) are perfect squares?

Explanation opens after your attempt
Correct Answer

B. 6

Step 1

Concept

In a square factor, every prime exponent must be even.

Step 2

Why this answer is correct

For (2), choices are (0,2,4), so (3); for (3), choices are (0,2), so (2); for (5), only (0), so (1). Total \(3 \times 2 \times 1=6\).

Step 3

Exam Tip

Count even exponent choices separately. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य की घात सम होनी चाहिए। चरण 2: (2) के लिए घात (0,2,4) के (3) विकल्प, (3) के लिए (0,2) के (2) विकल्प और (5) के लिए केवल (0) का (1) विकल्प है। कुल \(3 \times 2 \times 1=6\)। चरण 3: सम घातों के विकल्प अलग-अलग गिनें।

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\(2^3 \times 3^2 \times 5\) के कितने गुणनखंड पूर्ण वर्ग होंगे?

How many factors of \(2^3 \times 3^2 \times 5\) are perfect squares?

Explanation opens after your attempt
Correct Answer

A. 4

Step 1

Concept

In a square factor, every prime exponent must be even.

Step 2

Why this answer is correct

For (2), choices are (0,2), so (2) choices; for (3), choices are (0,2), so (2) choices; for (5), only (0), so (1) choice. Total \(2 \times 2 \times 1=4\).

Step 3

Exam Tip

Count even exponent choices separately. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य की घात सम होनी चाहिए। चरण 2: (2) के लिए घात (0,2) के (2) विकल्प, (3) के लिए (0,2) के (2) विकल्प और (5) के लिए केवल (0) का (1) विकल्प है। कुल \(2 \times 2 \times 1=4\)। चरण 3: सम घातों के विकल्प अलग-अलग गिनें।

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\(2^2 \times 3^2 \times 7^2\) के कितने गुणनखंड पूर्ण वर्ग होंगे?

How many factors of \(2^2 \times 3^2 \times 7^2\) are perfect squares?

Explanation opens after your attempt
Correct Answer

A. 8

Step 1

Concept

In a square factor, every prime exponent must be even.

Step 2

Why this answer is correct

For each prime, the exponent can be (0) or (2), giving (2) choices. Total \(2 \times 2 \times 2=8\).

Step 3

Exam Tip

Count even exponent choices separately and multiply. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य की घात सम होनी चाहिए। चरण 2: प्रत्येक अभाज्य के लिए घात (0) या (2) हो सकती है, यानी (2) विकल्प। कुल \(2 \times 2 \times 2=8\)। चरण 3: सम घातों की संख्या अलग-अलग गिनकर गुणा करें।

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\(2^3 \times 3^2 \times 5^2\) के कितने गुणनखंड पूर्ण वर्ग होंगे?

How many factors of \(2^3 \times 3^2 \times 5^2\) are perfect squares?

Explanation opens after your attempt
Correct Answer

A. 12

Step 1

Concept

For a square factor, every prime exponent must be even.

Step 2

Why this answer is correct

For \(2^3\), even choices are (0,2); for \(3^2\), (0,2); for \(5^2\), (0,2). Total \(2 \times 2 \times 2=8\).

Step 3

Exam Tip

Count only even exponent choices for square factors. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य की घात सम होनी चाहिए। चरण 2: (2) के लिए घातें (0,2) यानी 2 विकल्प, (3) के लिए (0,2) यानी 2 विकल्प, और (5) के लिए (0,2) यानी 2 विकल्प हैं। कुल \(2 \times 2 \times 2=8\) नहीं, ध्यान दें \(2^3\) में सम घात (0,2) ही हैं, इसलिए सही संख्या 8 है। चरण 3: पूर्ण वर्ग में केवल सम घात गिनें।

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यदि \(180=2^2\times3^2\times5\), तो (180) के ऐसे गुणनखंडों की संख्या कितनी है जो पूर्ण वर्ग हैं?

If \(180=2^2\times3^2\times5\), how many factors of (180) are perfect squares?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

A square factor must have even exponents for every prime.

Step 2

Why this answer is correct

For (2), choices are (0,2); for (3), choices are (0,2); for (5), only (0). Total \(=2\times2\times1=4\).

Step 3

Exam Tip

Count only even exponent choices for square factors. चरण 1: पूर्ण वर्ग गुणनखंड में हर अभाज्य घात सम होनी चाहिए। चरण 2: (2) की घात (0,2) यानी (2) तरीके; (3) की घात (0,2) यानी (2) तरीके; (5) की घात केवल (0) यानी (1) तरीका। कुल \(2\times2\times1=4\)। चरण 3: वर्ग गुणनखंड गिनते समय केवल सम घातें लें।

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मेरीआन की मूर्तियों को सार्वजनिक चौकों में रखने से कौन सा विचार मजबूत होता था?

Which idea was strengthened by placing statues of Marianne in public squares?

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Correct Answer

A. राष्ट्र और गणतंत्र जनता के जीवन का हिस्सा हैंThe nation and republic are part of public life

Step 1

Concept

Public squares were spaces of ordinary citizens.

Step 2

Why this answer is correct

Marianne's presence there brought the nation before the people.

Step 3

Exam Tip

Connect it with the spread of nationalist messages in public spaces. चरण 1: सार्वजनिक चौक आम नागरिकों की जगह थे। चरण 2: वहां मेरीआन की उपस्थिति राष्ट्र को जनता के सामने लाती थी। चरण 3: इसे सार्वजनिक स्थानों में राष्ट्रवादी संदेश के प्रसार से जोड़ें।

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मेरीआन की मूर्तियों को सार्वजनिक चौकों में रखने का राजनीतिक संदेश क्या था?

What political message was given by placing statues of Marianne in public squares?

Explanation opens after your attempt
Correct Answer

A. गणतंत्र और राष्ट्र जनता से जुड़े हैंThe republic and nation are linked with the people

Step 1

Concept

Public squares were spaces of ordinary citizens.

Step 2

Why this answer is correct

Placing Marianne there connected the nation with the people.

Step 3

Exam Tip

Treat it as a symbol of public nationalism. चरण 1: सार्वजनिक चौक आम नागरिकों के स्थान थे। चरण 2: वहां मेरीआन की मूर्ति रखना राष्ट्र को जनता से जोड़ता था। चरण 3: इसे सार्वजनिक राष्ट्रवाद का प्रतीक मानें।

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मेरीआन की मूर्तियां सार्वजनिक चौकों में लगाने से क्या प्रभाव पड़ता था?

What effect did placing statues of Marianne in public squares have?

Explanation opens after your attempt
Correct Answer

A. लोगों में साझा फ्रांसीसी पहचान मजबूत होती थीIt strengthened a shared French identity among people

Step 1

Concept

Symbols placed in public spaces are visible to everyone.

Step 2

Why this answer is correct

Statues of Marianne connected citizens with the French nation.

Step 3

Exam Tip

Treat this as an example of public nationalism. चरण 1: सार्वजनिक स्थानों पर रखे प्रतीक सभी लोगों को दिखाई देते हैं। चरण 2: मेरीआन की मूर्तियां नागरिकों को फ्रांसीसी राष्ट्र से जोड़ती थीं। चरण 3: इसे सार्वजनिक राष्ट्रवाद का उदाहरण मानें।

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यदि किसी समांतर श्रेणी का सामान्य अंतर (7) है और प्रत्येक पद से (12) घटाया जाए, तो नया सामान्य अंतर क्या होगा?

If an AP has common difference (7) and (12) is subtracted from every term, what is the new common difference?

Explanation opens after your attempt
Correct Answer

B. (7)

Step 1

Concept

Subtracting the same number from every term does not change the difference. In exams, treat uniform subtraction as changing only the first term.

Step 2

Why this answer is correct

The correct answer is B. (7). Subtracting the same number from every term does not change the difference. In exams, treat uniform subtraction as changing only the first term.

Step 3

Exam Tip

हर पद से समान संख्या घटाने पर अंतर नहीं बदलता। परीक्षा में समान घटाव को केवल पहला पद बदलने वाला समझें।

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एक समांतर श्रेणी का सामान्य अंतर (d) है। हर पद को (-3) से गुणा करने पर नया सामान्य अंतर क्या होगा?

An AP has common difference (d). If every term is multiplied by (-3), what is the new common difference?

Explanation opens after your attempt
Correct Answer

B. (-3d)

Step 1

Concept

Multiplication scales all differences by the same factor, so the new difference is (-3d). In exams, apply the transformation to the difference.

Step 2

Why this answer is correct

The correct answer is B. (-3d). Multiplication scales all differences by the same factor, so the new difference is (-3d). In exams, apply the transformation to the difference.

Step 3

Exam Tip

गुणन से सभी अंतर उसी गुणक से गुणा होते हैं, इसलिए नया अंतर (-3d) है। परीक्षा में रूपांतरण का असर अंतर पर लगाएं।

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यदि \(5,12,19,26,\ldots\) में हर दूसरा पद चुना जाए तो बने अनुक्रम का सार्व अंतर क्या होगा?

If every second term is selected from \(5,12,19,26,\ldots\), what will be the common difference of the formed sequence?

Explanation opens after your attempt
Correct Answer

C. (14)

Step 1

Concept

The selected sequence is \(5,19,33,\ldots\), and its difference is (14). Selecting every second term makes the new (d) twice the original (d).

Step 2

Why this answer is correct

The correct answer is C. (14). The selected sequence is \(5,19,33,\ldots\), and its difference is (14). Selecting every second term makes the new (d) twice the original (d).

Step 3

Exam Tip

चुना गया अनुक्रम \(5,19,33,\ldots\) होगा और इसका अंतर (14) है। हर दूसरा पद लेने पर नया (d) मूल (d) का (2) गुना होता है।

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यदि \(3,8,13,\ldots\) में प्रत्येक पद से (4n) घटाया जाए तो नया सार्व अंतर क्या होगा?

If (4n) is subtracted from each term of \(3,8,13,\ldots\), what will be the new common difference?

Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

The original (d=5), and (4n) has (d=4), so the new (d=1). In term-number changes, subtract its difference.

Step 2

Why this answer is correct

The correct answer is A. (1). The original (d=5), and (4n) has (d=4), so the new (d=1). In term-number changes, subtract its difference.

Step 3

Exam Tip

मूल (d=5) है और (4n) का (d=4) है, इसलिए नया (d=1)। पद संख्या से जुड़े परिवर्तन में उसके अंतर को घटाएं।

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यदि \(8,13,18,\ldots\) और \(4,10,16,\ldots\) के पद-दर-पद अंतर से अनुक्रम बने तो उसका (d) क्या होगा?

If a sequence is formed by termwise difference of \(8,13,18,\ldots\) and \(4,10,16,\ldots\), what will be its (d)?

Explanation opens after your attempt
Correct Answer

A. (-1)

Step 1

Concept

The first sequence has (d=5) and the second has (d=6), so the difference sequence has (d=5-6=-1). In termwise difference, take the difference of common differences.

Step 2

Why this answer is correct

The correct answer is A. (-1). The first sequence has (d=5) and the second has (d=6), so the difference sequence has (d=5-6=-1). In termwise difference, take the difference of common differences.

Step 3

Exam Tip

पहले अनुक्रम का (d=5) और दूसरे का (d=6) है, इसलिए अंतर अनुक्रम का (d=5-6=-1)। पद-दर-पद अंतर में सार्व अंतरों का अंतर लें।

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यदि (a,a+d,a+2d) के तीनों पदों में क्रमशः (3,6,9) जोड़े जाएं तो नया सार्व अंतर क्या होगा?

If (3,6,9) are added respectively to (a,a+d,a+2d), what will be the new common difference?

Explanation opens after your attempt
Correct Answer

C. (d+3)

Step 1

Concept

The new terms are (a+3,a+d+6,a+2d+9), and both differences are (d+3). The difference of the added numbers is added to (d).

Step 2

Why this answer is correct

The correct answer is C. (d+3). The new terms are (a+3,a+d+6,a+2d+9), and both differences are (d+3). The difference of the added numbers is added to (d).

Step 3

Exam Tip

नए पद (a+3,a+d+6,a+2d+9) हैं और दोनों अंतर (d+3) हैं। क्रमशः बढ़ते जोड़ का अंतर (d) में जुड़ता है।

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एक अंकगणितीय श्रेणी में पांचवें और पहले पद का अंतर (-20) है। सार्व अंतर क्या है?

In an arithmetic progression, the difference between the fifth and first terms is (-20). What is the common difference?

Explanation opens after your attempt
Correct Answer

B. (-5)

Step 1

Concept

From the first to the fifth term there are (4) gaps, so (4d=-20) and (d=-5). In a decreasing progression, (d) is negative.

Step 2

Why this answer is correct

The correct answer is B. (-5). From the first to the fifth term there are (4) gaps, so (4d=-20) and (d=-5). In a decreasing progression, (d) is negative.

Step 3

Exam Tip

पहले से पांचवें पद तक (4) अंतर हैं, इसलिए (4d=-20) और (d=-5)। घटती श्रेणी में (d) ऋणात्मक होता है।

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अनुक्रम \(0.6,1.05,1.50,1.95,\ldots\) का सार्व अंतर क्या है?

What is the common difference of the sequence \(0.6,1.05,1.50,1.95,\ldots\)?

Explanation opens after your attempt
Correct Answer

C. (0.45)

Step 1

Concept

(1.05-0.60=0.45) and (1.50-1.05=0.45). Adding zeros makes decimal subtraction safer.

Step 2

Why this answer is correct

The correct answer is C. (0.45). (1.05-0.60=0.45) and (1.50-1.05=0.45). Adding zeros makes decimal subtraction safer.

Step 3

Exam Tip

(1.05-0.60=0.45) और (1.50-1.05=0.45) है। दशमलव में शून्य लगाकर घटाना सुरक्षित है।

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यदि \(24,20,16,12,\ldots\) के प्रत्येक पद में (7) जोड़ा जाए तो नए अनुक्रम का सार्व अंतर क्या होगा?

If (7) is added to each term of \(24,20,16,12,\ldots\), what will be the common difference of the new sequence?

Explanation opens after your attempt
Correct Answer

B. (-4)

Step 1

Concept

Adding the same number to all terms does not change the common difference. The original (d=20-24=-4), so the new (d) remains (-4).

Step 2

Why this answer is correct

The correct answer is B. (-4). Adding the same number to all terms does not change the common difference. The original (d=20-24=-4), so the new (d) remains (-4).

Step 3

Exam Tip

सभी पदों में समान संख्या जोड़ने से सार्व अंतर नहीं बदलता। मूल (d=20-24=-4) है, इसलिए नया (d=-4) ही रहेगा।

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अनुक्रम \(\frac{3}{8},\frac{5}{8},\frac{7}{8},\frac{9}{8},\ldots\) का सार्व अंतर क्या है?

What is the common difference of the sequence \(\frac{3}{8},\frac{5}{8},\frac{7}{8},\frac{9}{8},\ldots\)?

Explanation opens after your attempt
Correct Answer

B. \(\frac{1}{4}\)

Step 1

Concept

\(\frac{5}{8}-\frac{3}{8}=\frac{2}{8}=\frac{1}{4}\). When denominators are equal, subtract the numerators.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{1}{4}\). \(\frac{5}{8}-\frac{3}{8}=\frac{2}{8}=\frac{1}{4}\). When denominators are equal, subtract the numerators.

Step 3

Exam Tip

\(\frac{5}{8}-\frac{3}{8}=\frac{2}{8}=\frac{1}{4}\) है। भिन्नों में समान हर होने पर अंशों का अंतर लें।

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यदि (a,a+d,a+2d) के तीनों पदों में क्रमशः (2,4,6) जोड़े जाएं, तो नया सार्व अंतर क्या होगा?

If (2,4,6) are added respectively to (a,a+d,a+2d), what will be the new common difference?

Explanation opens after your attempt
Correct Answer

C. (d+2)

Step 1

Concept

The new terms are (a+2, a+d+4, a+2d+6), and both differences are (d+2). The difference (2) of the added numbers is also added to (d).

Step 2

Why this answer is correct

The correct answer is C. (d+2). The new terms are (a+2, a+d+4, a+2d+6), and both differences are (d+2). The difference (2) of the added numbers is also added to (d).

Step 3

Exam Tip

नए पद (a+2, a+d+4, a+2d+6) हैं और दोनों अंतर (d+2) हैं। क्रमशः बढ़ते जोड़ का अंतर (2) भी (d) में जुड़ता है।

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एक अंकगणितीय श्रेणी में पांचवें और दूसरे पद का अंतर (-18) है। (d) क्या होगा?

In an arithmetic progression, the difference between the fifth and second terms is (-18). What will (d) be?

Explanation opens after your attempt
Correct Answer

B. (-6)

Step 1

Concept

From the second to the fifth term there are (3) gaps, so (3d=-18) and (d=-6). In a decreasing progression, (d) remains negative.

Step 2

Why this answer is correct

The correct answer is B. (-6). From the second to the fifth term there are (3) gaps, so (3d=-18) and (d=-6). In a decreasing progression, (d) remains negative.

Step 3

Exam Tip

दूसरे से पांचवें पद तक (3) अंतर हैं, इसलिए (3d=-18) और (d=-6)। घटती श्रेणी में (d) ऋणात्मक रहता है।

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एक अंकगणितीय श्रेणी में तीसरे और सातवें पद का अंतर (28) है। सार्व अंतर क्या है?

In an arithmetic progression, the difference between the third and seventh terms is (28). What is the common difference?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

From the third to the seventh term there are (4) gaps, so (4d=28) and (d=7). Convert term distance into number of gaps.

Step 2

Why this answer is correct

The correct answer is C. (7). From the third to the seventh term there are (4) gaps, so (4d=28) and (d=7). Convert term distance into number of gaps.

Step 3

Exam Tip

तीसरे से सातवें पद तक (4) अंतर होते हैं, इसलिए (4d=28) और (d=7)। पदों की दूरी को अंतरालों की संख्या में बदलें।

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अनुक्रम \(-\frac{7}{4}, -1, -\frac{1}{4}, \frac{1}{2},\ldots\) में सार्व अंतर क्या है?

What is the common difference in the sequence \(-\frac{7}{4}, -1, -\frac{1}{4}, \frac{1}{2},\ldots\)?

Explanation opens after your attempt
Correct Answer

B. \(\frac{3}{4}\)

Step 1

Concept

(-1-\left\(-\frac{7}{4}\right\)=\frac{3}{4}), and the next difference is also \(\frac{3}{4}\). Be careful while subtracting negative fractions.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{3}{4}\). (-1-\left\(-\frac{7}{4}\right\)=\frac{3}{4}), and the next difference is also \(\frac{3}{4}\). Be careful while subtracting negative fractions.

Step 3

Exam Tip

(-1-\left\(-\frac{7}{4}\right\)=\frac{3}{4}) और अगला अंतर भी \(\frac{3}{4}\) है। ऋणात्मक भिन्नों में घटाव सावधानी से करें।

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यदि (4p+1, 6p-3, 9p-10) समांतर श्रेणी में हैं, तो (p) और सामान्य अंतर का सही युग्म कौन-सा है?

If (4p+1, 6p-3, 9p-10) are in an arithmetic progression, which pair of (p) and common difference is correct?

Explanation opens after your attempt
Correct Answer

B. (p=3, d=2)

Step 1

Concept

The differences are (2p-4) and (3p-7). Equating them gives (p=3), so (d=2).

Step 2

Why this answer is correct

The correct answer is B. (p=3, d=2). The differences are (2p-4) and (3p-7). Equating them gives (p=3), so (d=2).

Step 3

Exam Tip

अंतर (2p-4) और (3p-7) हैं। बराबर करने पर (p=3), इसलिए (d=2).

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यदि (13, 2x+1, 4x-5) समांतर श्रेणी में हैं, तो सामान्य अंतर क्या है?

If (13, 2x+1, 4x-5) are in an arithmetic progression, what is the common difference?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

From (2(2x+1)=13+(4x-5)), we get (2=8), which is impossible. Therefore no such common difference exists.

Step 2

Why this answer is correct

The correct answer is C. (7). From (2(2x+1)=13+(4x-5)), we get (2=8), which is impossible. Therefore no such common difference exists.

Step 3

Exam Tip

(2(2x+1)=13+(4x-5)) से (2=8) असंभव है। इसलिए ऐसा सामान्य अंतर नहीं होगा।

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यदि (3, 3+2m, 3+4m, 3+6m) समांतर श्रेणी है, तो सामान्य अंतर क्या है?

If (3, 3+2m, 3+4m, 3+6m) is an arithmetic progression, what is the common difference?

Explanation opens after your attempt
Correct Answer

B. (2m)

Step 1

Concept

Each time (2m) is added. Therefore the common difference is (2m).

Step 2

Why this answer is correct

The correct answer is B. (2m). Each time (2m) is added. Therefore the common difference is (2m).

Step 3

Exam Tip

हर बार (2m) जुड़ रहा है। इसलिए सामान्य अंतर (2m) है।

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किस विकल्प में दिए गए पद समांतर श्रेणी हैं लेकिन सामान्य अंतर (0) है?

In which option do the terms form an arithmetic progression with common difference (0)?

Explanation opens after your attempt
Correct Answer

A. (6, 6, 6, 6)

Step 1

Concept

When all terms are equal, every difference is (0). A constant sequence is also an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is A. (6, 6, 6, 6). When all terms are equal, every difference is (0). A constant sequence is also an arithmetic progression.

Step 3

Exam Tip

सभी पद समान हों तो हर अंतर (0) होता है। स्थिर क्रम भी समांतर श्रेणी होता है।

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क्रम \(101, 97, 93, 89, \ldots\) में सामान्य अंतर क्या है और यह कैसा है?

In the sequence \(101, 97, 93, 89, \ldots\), what is the common difference and what is its nature?

Explanation opens after your attempt
Correct Answer

B. (-4), ऋणात्मक(-4), negative

Step 1

Concept

Each next term is (4) less than the previous one, so (d=-4). A decreasing arithmetic progression has a negative common difference.

Step 2

Why this answer is correct

The correct answer is B. (-4), ऋणात्मक / (-4), negative. Each next term is (4) less than the previous one, so (d=-4). A decreasing arithmetic progression has a negative common difference.

Step 3

Exam Tip

हर अगला पद पिछले से (4) कम है, इसलिए (d=-4). घटती समांतर श्रेणी में सामान्य अंतर ऋणात्मक होता है।

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किस क्रम में सामान्य अंतर \(\frac{3}{4}\) है?

Which sequence has common difference \(\frac{3}{4}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{4}, 1, \frac{7}{4}, \frac{5}{2}\)

Step 1

Concept

In the first option, every consecutive difference is \(\frac{3}{4}\). With fractions, using common denominators is the safer method.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{4}, 1, \frac{7}{4}, \frac{5}{2}\). In the first option, every consecutive difference is \(\frac{3}{4}\). With fractions, using common denominators is the safer method.

Step 3

Exam Tip

पहले विकल्प में हर लगातार अंतर \(\frac{3}{4}\) है। भिन्नों में हर को समान बनाकर अंतर निकालना सुरक्षित तरीका है।

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क्रम (4x-3, 3x+5, x+21) समांतर श्रेणी में है। सामान्य अंतर क्या है?

The sequence (4x-3, 3x+5, x+21) is in an arithmetic progression. What is the common difference?

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

The differences are (-x+8) and (-2x+16). Equating them gives (x=8), so (d=0), not (8).

Step 2

Why this answer is correct

The correct answer is A. (8). The differences are (-x+8) and (-2x+16). Equating them gives (x=8), so (d=0), not (8).

Step 3

Exam Tip

अंतर (-x+8) और (-2x+16) हैं। बराबर करने पर (x=8), इसलिए (d=0) नहीं बल्कि (d=0) आता है।

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यदि (6, h, 30) समांतर श्रेणी में हैं, तो (h) और सामान्य अंतर का सही युग्म कौन-सा है?

If (6, h, 30) are in an arithmetic progression, which pair of (h) and common difference is correct?

Explanation opens after your attempt
Correct Answer

B. (h=18, d=12)

Step 1

Concept

The middle term is \(\frac{6+30}{2}=18\). The common difference is (18-6=12).

Step 2

Why this answer is correct

The correct answer is B. (h=18, d=12). The middle term is \(\frac{6+30}{2}=18\). The common difference is (18-6=12).

Step 3

Exam Tip

बीच का पद \(\frac{6+30}{2}=18\) है। सामान्य अंतर (18-6=12) है।

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यदि (14, 14-d, 14-2d, 14-3d) समांतर श्रेणी है, तो सामान्य अंतर क्या है?

If (14, 14-d, 14-2d, 14-3d) is an arithmetic progression, what is the common difference?

Explanation opens after your attempt
Correct Answer

B. (-d)

Step 1

Concept

Each next term is (d) less than the previous term. Therefore the common difference is (-d).

Step 2

Why this answer is correct

The correct answer is B. (-d). Each next term is (d) less than the previous term. Therefore the common difference is (-d).

Step 3

Exam Tip

हर अगला पद पिछले पद से (d) कम है। इसलिए सामान्य अंतर (-d) है।

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यदि (9, y, 2y+6) समांतर श्रेणी में हैं, तो सामान्य अंतर क्या है?

If (9, y, 2y+6) are in an arithmetic progression, what is the common difference?

Explanation opens after your attempt
Correct Answer

B. (15)

Step 1

Concept

From (2y=9+(2y+6)), we get (0=15), so it never forms an arithmetic progression. None of the listed values can be its common difference.

Step 2

Why this answer is correct

The correct answer is B. (15). From (2y=9+(2y+6)), we get (0=15), so it never forms an arithmetic progression. None of the listed values can be its common difference.

Step 3

Exam Tip

(2y=9+(2y+6)) से (0=15) नहीं, इसलिए यह कभी समांतर श्रेणी नहीं बनती। सही विकल्पों में ऐसा कोई सामान्य अंतर नहीं है।

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किस क्रम का सामान्य अंतर ऋणात्मक है और सभी लगातार अंतर बराबर हैं?

Which sequence has a negative common difference and all consecutive differences equal?

Explanation opens after your attempt
Correct Answer

B. (20, 16, 12, 8)

Step 1

Concept

In (20,16,12,8), (4) is subtracted each time, so (d=-4). Do not just see decreasing order; check equal differences too.

Step 2

Why this answer is correct

The correct answer is B. (20, 16, 12, 8). In (20,16,12,8), (4) is subtracted each time, so (d=-4). Do not just see decreasing order; check equal differences too.

Step 3

Exam Tip

(20,16,12,8) में हर बार (4) घटता है, इसलिए (d=-4). केवल घटते क्रम को देखकर नहीं, बराबर अंतर भी जांचें।

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यदि (p-4, 2p+1, 4p-2) समांतर श्रेणी में हैं, तो सामान्य अंतर क्या होगा?

If (p-4, 2p+1, 4p-2) are in an arithmetic progression, what will be the common difference?

Explanation opens after your attempt
Correct Answer

B. (13)

Step 1

Concept

First, (2(2p+1)=(p-4)+(4p-2)) gives (p=8). Then the common difference is ((2p+1)-(p-4)=13).

Step 2

Why this answer is correct

The correct answer is B. (13). First, (2(2p+1)=(p-4)+(4p-2)) gives (p=8). Then the common difference is ((2p+1)-(p-4)=13).

Step 3

Exam Tip

पहले (2(2p+1)=(p-4)+(4p-2)) से (p=8) मिलता है। तब सामान्य अंतर ((2p+1)-(p-4)=13) है।

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यदि \(6, 10, 14,\ldots\) और \(3, 8, 13,\ldots\) के पद-दर-पद अंतर से अनुक्रम बने, तो वह कैसा होगा?

If a sequence is formed by termwise difference of \(6, 10, 14,\ldots\) and \(3, 8, 13,\ldots\), what type will it be?

Explanation opens after your attempt
Correct Answer

A. (d=-1) वाली अंकगणितीय श्रेणीArithmetic progression with (d=-1)

Step 1

Concept

The first has (d=4) and the second has (d=5), so the difference sequence has (d=4-5=-1). The termwise difference of two arithmetic progressions is also an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is A. (d=-1) वाली अंकगणितीय श्रेणी / Arithmetic progression with (d=-1). The first has (d=4) and the second has (d=5), so the difference sequence has (d=4-5=-1). The termwise difference of two arithmetic progressions is also an arithmetic progression.

Step 3

Exam Tip

पहले (d=4) और दूसरे (d=5) हैं, इसलिए अंतर अनुक्रम का (d=4-5=-1)। दो अंकगणितीय श्रेणियों का पद-दर-पद अंतर भी अंकगणितीय श्रेणी होता है।

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यदि (a, a+d, a+2d) के तीनों पदों में क्रमशः (1,2,3) जोड़े जाएं, तो नया सार्व अंतर क्या होगा?

If (1,2,3) are added respectively to (a, a+d, a+2d), what will be the new common difference?

Explanation opens after your attempt
Correct Answer

C. (d+1)

Step 1

Concept

The new terms are (a+1, a+d+2, a+2d+3), and both differences are (d+1). Adding increasing numbers respectively adds (1) to (d).

Step 2

Why this answer is correct

The correct answer is C. (d+1). The new terms are (a+1, a+d+2, a+2d+3), and both differences are (d+1). Adding increasing numbers respectively adds (1) to (d).

Step 3

Exam Tip

नए पद (a+1, a+d+2, a+2d+3) हैं और दोनों अंतर (d+1) हैं। क्रमशः बढ़ती हुई जोड़ से (d) में (1) जुड़ता है।

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यदि \(2, 5, 8,\ldots\) और \(7, 12, 17,\ldots\) को पद-दर-पद जोड़ा जाए, तो बने अनुक्रम का सार्व अंतर क्या होगा?

If \(2, 5, 8,\ldots\) and \(7, 12, 17,\ldots\) are added term by term, what will be the common difference of the formed sequence?

Explanation opens after your attempt
Correct Answer

C. (8)

Step 1

Concept

The two common differences are (3) and (5), so the sum sequence has (d=3+5=8). In termwise addition, common differences add.

Step 2

Why this answer is correct

The correct answer is C. (8). The two common differences are (3) and (5), so the sum sequence has (d=3+5=8). In termwise addition, common differences add.

Step 3

Exam Tip

दोनों सार्व अंतर (3) और (5) हैं, इसलिए योग अनुक्रम का (d=3+5=8)। पद-दर-पद योग में सार्व अंतरों का योग होता है।

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किस विकल्प में पद समान मात्रा से घटते हैं लेकिन सार्व अंतर (-8) नहीं है?

In which option do the terms decrease equally but the common difference is not (-8)?

Explanation opens after your attempt
Correct Answer

D. \(81,72,63,54,\ldots\)

Step 1

Concept

The first three options have (d=-8), but \(81,72,63,54,\ldots\) has (d=-9). Check both value and sign in the options.

Step 2

Why this answer is correct

The correct answer is D. \(81,72,63,54,\ldots\). The first three options have (d=-8), but \(81,72,63,54,\ldots\) has (d=-9). Check both value and sign in the options.

Step 3

Exam Tip

पहले तीन विकल्पों में (d=-8) है, लेकिन \(81,72,63,54,\ldots\) में (d=-9) है। विकल्पों में मान और चिह्न दोनों देखें।

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एक अंकगणितीय श्रेणी में चौथे और पहले पद का अंतर (-15) है। सार्व अंतर क्या है?

In an arithmetic progression, the difference between the fourth and first terms is (-15). What is the common difference?

Explanation opens after your attempt
Correct Answer

B. (-5)

Step 1

Concept

There are (3) gaps between the fourth and first terms, so (3d=-15) and (d=-5). Keep (d) negative for a decreasing progression.

Step 2

Why this answer is correct

The correct answer is B. (-5). There are (3) gaps between the fourth and first terms, so (3d=-15) and (d=-5). Keep (d) negative for a decreasing progression.

Step 3

Exam Tip

चौथे और पहले पद के बीच (3) अंतर हैं, इसलिए (3d=-15) और (d=-5)। घटती श्रेणी में (d) ऋणात्मक रखें।

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