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100 results found for "linear form" in Class 10.

यदि (D=0), \(D_x=0\) और \(D_y=0\) हैं, तो दो रैखिक समीकरणों के युग्म में क्या होगा?

If (D=0), \(D_x=0\), and \(D_y=0\), what happens in a pair of two linear equations?

Explanation opens after your attempt
Correct Answer

C. अनंत हलInfinitely many solutions

Step 1

Concept

When all three determinants are zero, the equations may be dependent. In Class (10), link this with infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is C. अनंत हल / Infinitely many solutions. When all three determinants are zero, the equations may be dependent. In Class (10), link this with infinitely many solutions.

Step 3

Exam Tip

तीनों सारणिक शून्य होने पर समीकरण आश्रित हो सकते हैं। कक्षा (10) में इसे अनंत हल की स्थिति से जोड़कर देखें।

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यदि \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\) है, तो दो रैखिक समीकरणों के युग्म के लिए क्या निष्कर्ष होगा?

If \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\), what is the conclusion for a pair of two linear equations?

Explanation opens after your attempt
Correct Answer

C. अद्वितीय हलUnique solution

Step 1

Concept

When coefficient ratios are different, the lines intersect at one point. Therefore, a unique solution is obtained.

Step 2

Why this answer is correct

The correct answer is C. अद्वितीय हल / Unique solution. When coefficient ratios are different, the lines intersect at one point. Therefore, a unique solution is obtained.

Step 3

Exam Tip

गुणांक अनुपात अलग होने पर रेखाएँ एक बिंदु पर कटती हैं। इसलिए अद्वितीय हल मिलता है।

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किस स्थिति में दो रैखिक समीकरणों का युग्म संगत और आश्रित कहलाता है?

In which condition is a pair of two linear equations called consistent and dependent?

Explanation opens after your attempt
Correct Answer

A. जब (a_1a_2=b_1 / b_2=c_1 / c_2) हो / When \(a_1 / c_2\)

Step 1

Concept

If all three ratios are equal both equations represent the same line. This is a consistent and dependent pair.

Step 2

Why this answer is correct

The correct answer is A. जब \(a_1 / a_2=b_1 / b_2=c_1 / c_2\) हो / When \(a_1 / c_2\). If all three ratios are equal both equations represent the same line. This is a consistent and dependent pair.

Step 3

Exam Tip

तीनों अनुपात बराबर हों तो दोनों समीकरण समान रेखा दर्शाते हैं। यही संगत और आश्रित युग्म है।

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किस स्थिति में दो रैखिक समीकरणों का युग्म संगत और स्वतंत्र कहलाता है?

In which condition is a pair of two linear equations called consistent and independent?

Explanation opens after your attempt
Correct Answer

C. जब (a_1a_2 \ne b_1 / b_2) हो / When \(a_1 / b_2\)

Step 1

Concept

A consistent and independent pair has one unique solution. For this the ratios of (a) and (b) must be different.

Step 2

Why this answer is correct

The correct answer is C. जब \(a_1 / a_2 \ne b_1 / b_2\) हो / When \(a_1 / b_2\). A consistent and independent pair has one unique solution. For this the ratios of (a) and (b) must be different.

Step 3

Exam Tip

संगत और स्वतंत्र युग्म में एक अद्वितीय हल होता है। इसके लिए (a) और (b) के अनुपात अलग होने चाहिए।

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किस स्थिति में दो रैखिक समीकरणों का युग्म संगत कहलाता है?

In which case is a pair of two linear equations called consistent?

Explanation opens after your attempt
Correct Answer

A. जब कम से कम एक हल होWhen there is at least one solution

Step 1

Concept

A consistent pair has at least one common solution. It may have one solution or infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is A. जब कम से कम एक हल हो / When there is at least one solution. A consistent pair has at least one common solution. It may have one solution or infinitely many solutions.

Step 3

Exam Tip

संगत युग्म में कम से कम एक सामान्य हल होता है। यह एक हल या अनंत हल दोनों हो सकता है।

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किस स्थिति में दो रैखिक समीकरणों का युग्म असंगत कहलाता है?

In which case is a pair of two linear equations called inconsistent?

Explanation opens after your attempt
Correct Answer

A. जब कोई हल न होWhen there is no solution

Step 1

Concept

An inconsistent pair has no common solution. In a graph, it appears as parallel lines.

Step 2

Why this answer is correct

The correct answer is A. जब कोई हल न हो / When there is no solution. An inconsistent pair has no common solution. In a graph, it appears as parallel lines.

Step 3

Exam Tip

असंगत युग्म का कोई सामान्य हल नहीं होता। ग्राफ में यह समानांतर रेखाओं से दिखता है।

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यदि दो रैखिक समीकरणों में \(a_1/a_2 \ne b_1/b_2\) हो, तो हलों की संख्या क्या होगी?

If two linear equations have \(a_1/a_2 \ne b_1/b_2\), how many solutions will they have?

Explanation opens after your attempt
Correct Answer

B. एक अद्वितीय हलOne unique solution

Step 1

Concept

When coefficient ratios are different, the lines meet at one point. In exams, check the ratios of (a) and (b) first.

Step 2

Why this answer is correct

The correct answer is B. एक अद्वितीय हल / One unique solution. When coefficient ratios are different, the lines meet at one point. In exams, check the ratios of (a) and (b) first.

Step 3

Exam Tip

जब गुणांकों के अनुपात अलग होते हैं, रेखाएं एक बिंदु पर मिलती हैं। परीक्षा में पहले (a) और (b) के अनुपात जांचें।

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यदि (5x+8y=37) और (15x+24y=m) असंगत युग्म हों, तो (m) के लिए सही शर्त क्या है?

If (5x+8y=37) and (15x+24y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m\ne111\)

Step 1

Concept

The first two ratios are equal. For inconsistency, the constant ratio must be different.

Step 2

Why this answer is correct

The correct answer is B. \(m\ne111\). The first two ratios are equal. For inconsistency, the constant ratio must be different.

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं। असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए।

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यदि (7x+3y=25) और (14x+6y=m) असंगत युग्म हों, तो (m) के लिए सही शर्त क्या है?

If (7x+3y=25) and (14x+6y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m \ne 50\)

Step 1

Concept

The first two ratios are equal. For inconsistency, the constant ratio must be different so \(m \ne 50\).

Step 2

Why this answer is correct

The correct answer is B. \(m \ne 50\). The first two ratios are equal. For inconsistency, the constant ratio must be different so \(m \ne 50\).

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं। असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए इसलिए \(m \ne 50\)।

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यदि (3x+8y=25) और (9x+24y=m) असंगत युग्म हों, तो (m) के लिए सही शर्त क्या है?

If (3x+8y=25) and (9x+24y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m \ne 75\)

Step 1

Concept

The first two ratios are equal, so the constant ratio must be different for inconsistency. Hence, \(m \ne 75\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(m \ne 75\). The first two ratios are equal, so the constant ratio must be different for inconsistency. Hence, \(m \ne 75\) is correct.

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं, इसलिए असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए। अतः \(m \ne 75\) सही है।

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यदि (2x+5y=17) और (4x+10y=m) असंगत युग्म हों, तो (m) के लिए सही शर्त क्या है?

If (2x+5y=17) and (4x+10y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m \ne 34\)

Step 1

Concept

The first two ratios are equal, so the constant ratio must be different for inconsistency. Hence, \(m \ne 34\).

Step 2

Why this answer is correct

The correct answer is B. \(m \ne 34\). The first two ratios are equal, so the constant ratio must be different for inconsistency. Hence, \(m \ne 34\).

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं, इसलिए असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए। अतः \(m \ne 34\) होगा।

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यदि (5x+2y=13) और (10x+4y=m) असंगत युग्म हैं तो (m) के लिए सही शर्त क्या है?

If (5x+2y=13) and (10x+4y=m) form an inconsistent pair then what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

C. \(m \ne 26\)

Step 1

Concept

The first two ratios are equal so the constant ratio must differ for inconsistency. Hence \(m \ne 26\).

Step 2

Why this answer is correct

The correct answer is C. \(m \ne 26\). The first two ratios are equal so the constant ratio must differ for inconsistency. Hence \(m \ne 26\).

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं इसलिए असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए। अतः \(m \ne 26\)।

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यदि (4x+5y=16) और (8x+10y=m) असंगत युग्म हैं, तो (m) के लिए सही शर्त क्या है?

If (4x+5y=16) and (8x+10y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m \ne 32\)

Step 1

Concept

The first two ratios are equal, so for inconsistency the constant ratio must differ. Hence, \(m \ne 32\).

Step 2

Why this answer is correct

The correct answer is B. \(m \ne 32\). The first two ratios are equal, so for inconsistency the constant ratio must differ. Hence, \(m \ne 32\).

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं, इसलिए असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए। अतः \(m \ne 32\)।

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यदि (2x+3y=7) और (4x+6y=m) असंगत युग्म हैं, तो (m) के लिए सही शर्त क्या है?

If (2x+3y=7) and (4x+6y=m) form an inconsistent pair, what is the correct condition for (m)?

Explanation opens after your attempt
Correct Answer

B. \(m \ne 14\)

Step 1

Concept

The first two ratios are equal, so for inconsistency the constant ratio must differ. Hence \(m \ne 14\).

Step 2

Why this answer is correct

The correct answer is B. \(m \ne 14\). The first two ratios are equal, so for inconsistency the constant ratio must differ. Hence \(m \ne 14\).

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं, इसलिए असंगत होने के लिए स्थिर पद का अनुपात अलग होना चाहिए। अतः \(m \ne 14\)।

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ग्राफ में (x)-अक्ष पर प्रतिच्छेद करने वाली रेखाओं के युग्म के लिए प्रतिच्छेद बिंदु का कौन सा रूप होगा?

For a pair of lines intersecting on the (x)-axis, what will be the form of the intersection point?

Explanation opens after your attempt
Correct Answer

B. ((a,0))

Step 1

Concept

Every point on the (x)-axis has (y)-coordinate (0). So the intersection has the form ((a,0)).

Step 2

Why this answer is correct

The correct answer is B. ((a,0)). Every point on the (x)-axis has (y)-coordinate (0). So the intersection has the form ((a,0)).

Step 3

Exam Tip

(x)-अक्ष पर हर बिंदु का (y)-निर्देशांक (0) होता है। इसलिए प्रतिच्छेद का रूप ((a,0)) होगा।

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सरल रूप में किसी परिमेय संख्या का भाजक (q) किस रूप में हो तो दशमलव समाप्त होगा?

In lowest form, what form should the denominator (q) of a rational number have for the decimal to terminate?

Explanation opens after your attempt
Correct Answer

A. \(2^m5^n\)

Step 1

Concept

For a terminating decimal, the denominator must be made only from (2) and (5).

Step 2

Why this answer is correct

So its form is \(2^m5^n\).

Step 3

Exam Tip

(m) or (n) may be zero, so only (2) or only (5) is also allowed. चरण 1: समाप्त दशमलव के लिए भाजक केवल (2) और (5) से बनना चाहिए। चरण 2: इसलिए उसका रूप \(2^m5^n\) होता है। चरण 3: (m) या (n) शून्य भी हो सकते हैं, इसलिए केवल (2) या केवल (5) भी चलेगा।

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किसी धनात्मक पूर्णांक को (9) से भाग देने पर कौन-सा रूप मानक रूप नहीं है?

When a positive integer is divided by (9), which form is not a standard form?

Explanation opens after your attempt
Correct Answer

C. (9q+9)

Step 1

Concept

On division by (9), remainders can be from (0) to (8).

Step 2

Why this answer is correct

In (9q+9), the remainder is (9), which equals the divisor.

Step 3

Exam Tip

It should be written correctly as (9(q+1)). चरण 1: (9) से भाग देने पर शेषफल (0) से (8) तक हो सकते हैं। चरण 2: (9q+9) में शेषफल (9) है, जो भाजक के बराबर है। चरण 3: इसे सही रूप में (9(q+1)) लिखा जाना चाहिए।

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किसी धनात्मक पूर्णांक को (3) से भाग देने पर कौन-सा रूप मानक रूप नहीं है?

When a positive integer is divided by (3), which form is not a standard form?

Explanation opens after your attempt
Correct Answer

D. (3q+3)

Step 1

Concept

On division by (3), possible remainders are (0,1,2).

Step 2

Why this answer is correct

In (3q+3), the remainder is (3), which equals the divisor.

Step 3

Exam Tip

It should be written correctly as (3(q+1)). चरण 1: (3) से भाग देने पर शेषफल (0,1,2) हो सकते हैं। चरण 2: (3q+3) में शेषफल (3) है, जो भाजक के बराबर है। चरण 3: इसे सही रूप में (3(q+1)) लिखना चाहिए।

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किसी धनात्मक पूर्णांक को (3) से भाग देने पर कौन-सा रूप संभव नहीं है?

Which form is not possible as a standard form when a positive integer is divided by (3)?

Explanation opens after your attempt
Correct Answer

D. (3q+3)

Step 1

Concept

On division by (3), possible remainders are (0,1,2).

Step 2

Why this answer is correct

In (3q+3), the remainder is (3), which equals the divisor.

Step 3

Exam Tip

It should be written as (3(q+1)). चरण 1: (3) से भाग देने पर शेषफल (0,1,2) हो सकते हैं। चरण 2: (3q+3) में शेषफल (3) है, जो भाजक के बराबर है। चरण 3: इसे (3(q+1)) के रूप में लिखना चाहिए।

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किसी धनात्मक पूर्णांक को (4) से भाग देने पर वह किस रूप में नहीं लिखा जा सकता?

When a positive integer is divided by (4), which form cannot be a standard remainder form?

Explanation opens after your attempt
Correct Answer

D. (4q+4)

Step 1

Concept

On division by (4), possible remainders are (0,1,2,3).

Step 2

Why this answer is correct

In (4q+4), the remainder is (4), which equals the divisor.

Step 3

Exam Tip

Such a form should be written as (4(q+1)). चरण 1: (4) से भाग देने पर शेषफल (0,1,2,3) हो सकते हैं। चरण 2: (4q+4) में शेषफल (4) है, जो भाजक के बराबर है। चरण 3: ऐसे रूप को (4(q+1)) लिखना चाहिए।

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यदि (4(2x-y)+3(x+y)=53) और (2(2x-y)-5(x+y)=-17), तो (y) का मान क्या है?

If (4(2x-y)+3(x+y)=53) and (2(2x-y)-5(x+y)=-17), what is the value of (y)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

Let (u=2x-y) and (v=x+y). Solve the two equations first, then convert back to (x) and (y).

Step 2

Why this answer is correct

The correct answer is B. (5). Let (u=2x-y) and (v=x+y). Solve the two equations first, then convert back to (x) and (y).

Step 3

Exam Tip

मान लें (u=2x-y) और (v=x+y)। (4u+3v=53), (2u-5v=-17) से (u=7), \(v=\frac{25}{3}\), इसलिए \(y=\frac{29}{9}\)।

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यदि (5(2x-y)-3(x+y)=11) और (2(2x-y)+4(x+y)=50), तो (y) का मान क्या है?

If (5(2x-y)-3(x+y)=11) and (2(2x-y)+4(x+y)=50), what is the value of (y)?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

Let (u=2x-y) and (v=x+y). Solving (5u-3v=11), (2u+4v=50) gives (u=7,v=9), hence \(y=\frac{11}{3}\).

Step 2

Why this answer is correct

The correct answer is A. (3). Let (u=2x-y) and (v=x+y). Solving (5u-3v=11), (2u+4v=50) gives (u=7,v=9), hence \(y=\frac{11}{3}\).

Step 3

Exam Tip

मान लें (u=2x-y) और (v=x+y)। (5u-3v=11), (2u+4v=50) से (u=7,v=9), इसलिए \(y=\frac{11}{3}\)।

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ग्राफ में (x-2y=4) की ढाल क्या होगी?

What is the slope of the graph of (x-2y=4)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{2}\)

Step 1

Concept

From (x-2y=4), \(y=\frac{1}{2}x-2\), so the slope is \(\frac{1}{2}\). To find slope, write the line as (y=mx+c).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{2}\). From (x-2y=4), \(y=\frac{1}{2}x-2\), so the slope is \(\frac{1}{2}\). To find slope, write the line as (y=mx+c).

Step 3

Exam Tip

(x-2y=4) से \(y=\frac{1}{2}x-2\), इसलिए ढाल \(\frac{1}{2}\) है। ढाल निकालने के लिए रेखा को (y=mx+c) रूप में लिखें।

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किसी रैखिक बहुपद (mx+n) में \(m\ne0\) हो तो उसकी घात क्या है?

If \(m\ne0\) in a linear polynomial (mx+n), what is its degree?

Explanation opens after your attempt
Correct Answer

B. (1)

Step 1

Concept

When \(m\ne0\), the term (mx) exists and the highest power is (1). So the degree is (1).

Step 2

Why this answer is correct

The correct answer is B. (1). When \(m\ne0\), the term (mx) exists and the highest power is (1). So the degree is (1).

Step 3

Exam Tip

\(m\ne0\) होने पर (mx) पद मौजूद रहता है और सबसे बड़ी घात (1) होती है। इसलिए घात (1) है।

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किसी रैखिक बहुपद (ax+b) में \(a\ne0\) हो तो उसकी घात क्या है?

If \(a\ne0\) in a linear polynomial (ax+b), what is its degree?

Explanation opens after your attempt
Correct Answer

B. (1)

Step 1

Concept

When \(a\ne0\) in (ax+b), the highest power of (x) is (1). So the degree is (1).

Step 2

Why this answer is correct

The correct answer is B. (1). When \(a\ne0\) in (ax+b), the highest power of (x) is (1). So the degree is (1).

Step 3

Exam Tip

(ax+b) में \(a\ne0\) होने पर (x) की सबसे बड़ी घात (1) है। इसलिए घात (1) होगी।

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यदि ग्राफ में प्रतिच्छेद बिंदु (\left\(3.75,-2.5\right\)) पढ़ा गया है, तो भिन्न रूप क्या होगा?

If the intersection point is read as (\left\(3.75,-2.5\right\)) on a graph, what is its fraction form?

Explanation opens after your attempt
Correct Answer

A. (\left\(\frac{15}{4},-\frac{5}{2}\right\))

Step 1

Concept

\(3.75=\frac{15}{4}\) and \(-2.5=-\frac{5}{2}\). It is better to convert decimal coordinates into simplified fractions.

Step 2

Why this answer is correct

The correct answer is A. (\left\(\frac{15}{4},-\frac{5}{2}\right\)). \(3.75=\frac{15}{4}\) and \(-2.5=-\frac{5}{2}\). It is better to convert decimal coordinates into simplified fractions.

Step 3

Exam Tip

\(3.75=\frac{15}{4}\) और \(-2.5=-\frac{5}{2}\)। दशमलव निर्देशांक को सरल भिन्न में बदलना बेहतर रहता है।

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यदि ग्राफ में प्रतिच्छेद बिंदु (\left\(2.25,-1.5\right\)) पढ़ा गया है, तो भिन्न रूप क्या होगा?

If the intersection point is read as (\left\(2.25,-1.5\right\)) on a graph, what is its fraction form?

Explanation opens after your attempt
Correct Answer

A. (\left\(\frac{9}{4},-\frac{3}{2}\right\))

Step 1

Concept

\(2.25=\frac{9}{4}\) and \(-1.5=-\frac{3}{2}\). It is better to convert decimal coordinates into simplified fractions.

Step 2

Why this answer is correct

The correct answer is A. (\left\(\frac{9}{4},-\frac{3}{2}\right\)). \(2.25=\frac{9}{4}\) and \(-1.5=-\frac{3}{2}\). It is better to convert decimal coordinates into simplified fractions.

Step 3

Exam Tip

\(2.25=\frac{9}{4}\) और \(-1.5=-\frac{3}{2}\)। दशमलव निर्देशांक को सरल भिन्न में बदलना बेहतर रहता है।

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यदि ग्राफ पर प्रतिच्छेद बिंदु (\left\(\frac{7}{2},\frac{5}{2}\right\)) है, तो दशमलव रूप क्या होगा?

If the intersection point on the graph is (\left\(\frac{7}{2},\frac{5}{2}\right\)), what is its decimal form?

Explanation opens after your attempt
Correct Answer

A. बिंदु (\left\(3.5,2.5\right\))Point (\left\(3.5,2.5\right\))

Step 1

Concept

\(\frac{7}{2}=3.5\) and \(\frac{5}{2}=2.5\). While reading a graph, understand the relation between fraction and decimal forms.

Step 2

Why this answer is correct

The correct answer is A. बिंदु (\left\(3.5,2.5\right\)) / Point (\left\(3.5,2.5\right\)). \(\frac{7}{2}=3.5\) and \(\frac{5}{2}=2.5\). While reading a graph, understand the relation between fraction and decimal forms.

Step 3

Exam Tip

\(\frac{7}{2}=3.5\) और \(\frac{5}{2}=2.5\)। ग्राफ पढ़ते समय भिन्न और दशमलव रूप का संबंध समझें।

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यदि \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\), तो समीकरण युग्म कैसा होगा?

If \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\), what type of pair will the equations form?

Explanation opens after your attempt
Correct Answer

C. असंगतInconsistent

Step 1

Concept

This condition represents distinct parallel lines. Therefore there is no common point and the pair is inconsistent.

Step 2

Why this answer is correct

The correct answer is C. असंगत / Inconsistent. This condition represents distinct parallel lines. Therefore there is no common point and the pair is inconsistent.

Step 3

Exam Tip

यह स्थिति अलग-अलग समांतर रेखाओं की होती है। इसलिए कोई सामान्य बिंदु नहीं होता और युग्म असंगत होता है।

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यदि ग्राफ पर दोनों रेखाएँ बिल्कुल एक ही रेखा बनती हैं, तो हलों की संख्या क्या होगी?

If both lines on a graph form exactly the same line, how many solutions will there be?

Explanation opens after your attempt
Correct Answer

B. अनंत हलInfinitely many solutions

Step 1

Concept

All points on the same line satisfy both equations. Therefore, there are infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is B. अनंत हल / Infinitely many solutions. All points on the same line satisfy both equations. Therefore, there are infinitely many solutions.

Step 3

Exam Tip

एक ही रेखा के सभी बिंदु दोनों समीकरणों को संतुष्ट करते हैं। इसलिए अनंत हल मिलते हैं।

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ग्राफीय विधि में समीकरण युग्म का हल किस रूप में प्राप्त होता है?

In graphical method, the solution of a pair of equations is obtained in which form?

Explanation opens after your attempt
Correct Answer

A. बिंदु के निर्देशांकCoordinates of a point

Step 1

Concept

The solution is the coordinates of the common point where both lines meet. In exams, always write the point in ( (x,y) ) order.

Step 2

Why this answer is correct

The correct answer is A. बिंदु के निर्देशांक / Coordinates of a point. The solution is the coordinates of the common point where both lines meet. In exams, always write the point in ( (x,y) ) order.

Step 3

Exam Tip

हल उस सामान्य बिंदु के निर्देशांक होते हैं जहाँ दोनों रेखाएँ मिलती हैं। परीक्षा में बिंदु को हमेशा ( (x,y) ) क्रम में लिखें।

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कौन सा समीकरण मानक रूप में लाने पर \(x^2+2x-8=0\) बनता है?

Which equation becomes \(x^2+2x-8=0\) after writing in standard form?

Explanation opens after your attempt
Correct Answer

A. \(x^2+2x=8\)

Step 1

Concept

Moving (8) to the left makes it (-8). So we get \(x^2+2x-8=0\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2+2x=8\). Moving (8) to the left makes it (-8). So we get \(x^2+2x-8=0\).

Step 3

Exam Tip

(8) को बाईं ओर लाने पर (-8) बनता है। इसलिए \(x^2+2x-8=0\) मिलता है।

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\(0.00\overline{54}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{54}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{3}{550}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{54}{9900}\). Reducing it gives \(\frac{3}{550}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{3}{550}\). Two non-repeating zeros and two repeating digits give \(\frac{54}{9900}\). Reducing it gives \(\frac{3}{550}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{54}{9900}\) बनता है। इसे सरल करने पर \(\frac{3}{550}\) मिलता है।

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\(0.00\overline{63}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{63}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{7}{1100}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{63}{9900}\). Reducing it gives \(\frac{7}{1100}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{7}{1100}\). Two non-repeating zeros and two repeating digits give \(\frac{63}{9900}\). Reducing it gives \(\frac{7}{1100}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{63}{9900}\) बनता है। इसे सरल करने पर \(\frac{7}{1100}\) मिलता है।

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\(0.00\overline{72}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{72}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{2}{275}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{72}{9900}\). Reducing it gives \(\frac{2}{275}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{2}{275}\). Two non-repeating zeros and two repeating digits give \(\frac{72}{9900}\). Reducing it gives \(\frac{2}{275}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{72}{9900}\) बनता है। इसे सरल करने पर \(\frac{2}{275}\) मिलता है।

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यदि \(\sqrt{5}=\frac{p}{q}\) सरलतम रूप में माना जाए और \(p^2=5q^2\) मिले, तो (p) को किस रूप में लिखना उचित है?

If \(\sqrt{5}=\frac{p}{q}\) is assumed in lowest form and \(p^2=5q^2\) is obtained, in which form should (p) be written?

Explanation opens after your attempt
Correct Answer

C. (p=5k)

Step 1

Concept

From \(p^2=5q^2\), \(p^2\) is divisible by (5).

Step 2

Why this answer is correct

Since (5) is prime, (p) is divisible by (5).

Step 3

Exam Tip

After divisibility, write (p=5k), where (k) is an integer. चरण 1: \(p^2=5q^2\) से \(p^2\) (5) से विभाज्य है। चरण 2: (5) अभाज्य है, इसलिए (p) (5) से विभाज्य है। चरण 3: विभाज्यता मिलने पर (p=5k) लिखें, जहां (k) पूर्णांक है।

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(305) को (24) से भाग देने का सही यूक्लिडीय रूप कौन-सा है?

Which is the correct Euclidean form when (305) is divided by (24)?

Explanation opens after your attempt
Correct Answer

A. \(305=24 \times 12+17\)

Step 1

Concept

\(24 \times 12=288\) and \(24 \times 13=312\).

Step 2

Why this answer is correct

Since (312) is greater, \(305=24 \times 12+17\) is correct.

Step 3

Exam Tip

A form with a negative remainder is not the standard Euclidean form. चरण 1: \(24 \times 12=288\) और \(24 \times 13=312\) है। चरण 2: (312) बड़ा है, इसलिए \(305=24 \times 12+17\) सही है। चरण 3: ऋणात्मक शेषफल वाला रूप मानक यूक्लिडीय रूप नहीं होता।

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(400) को (31) से भाग देने पर सही यूक्लिडीय रूप कौन-सा है?

Which is the correct Euclidean form when (400) is divided by (31)?

Explanation opens after your attempt
Correct Answer

A. \(400=31 \times 12+28\)

Step 1

Concept

\(31 \times 12=372\) and \(31 \times 13=403\).

Step 2

Why this answer is correct

Since (403) is greater, \(400=31 \times 12+28\).

Step 3

Exam Tip

A form with a negative remainder is not the standard Euclidean form. चरण 1: \(31 \times 12=372\) और \(31 \times 13=403\)। चरण 2: (403) बड़ा है, इसलिए \(400=31 \times 12+28\)। चरण 3: ऋणात्मक शेषफल वाला रूप मानक यूक्लिडीय रूप नहीं है।

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यदि किसी लक्षण का प्रभावी रूप उपस्थित है तो अप्रभावी रूप का क्या हो सकता है?

If the dominant form of a trait is present what can happen to the recessive form?

Explanation opens after your attempt
Correct Answer

A. वह दिखाई नहीं देगा पर सूचना के रूप में रह सकता हैIt may not appear but can remain as information

Step 1

Concept

The dominant form can control the visible trait.

Step 2

Why this answer is correct

The recessive form can remain hidden.

Step 3

Exam Tip

Still it can remain as information passed to the next generation. चरण 1: प्रभावी रूप दिखाई देने वाले लक्षण को नियंत्रित कर सकता है। चरण 2: अप्रभावी रूप छिप सकता है। चरण 3: फिर भी वह अगली पीढ़ी में जाने वाली सूचना के रूप में रह सकता है।

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यदि किसी मटर पौधे में लंबाई का एक प्रभावी और एक अप्रभावी रूप हो तो उसकी संतानों में बौना रूप कैसे आ सकता है?

If a pea plant has one dominant and one recessive form for height how can dwarf form appear in its offspring?

Explanation opens after your attempt
Correct Answer

A. जब संतान को दोनों माता पिता से अप्रभावी रूप मिलेंWhen offspring receives recessive forms from both parents

Step 1

Concept

A plant with one dominant and one recessive form may look tall.

Step 2

Why this answer is correct

It can pass the recessive form through gamete.

Step 3

Exam Tip

If both parents pass recessive forms the dwarf trait appears. चरण 1: एक प्रभावी और एक अप्रभावी रूप वाला पौधा बाहर से लंबा दिख सकता है। चरण 2: वह अप्रभावी रूप को जनन कोशिका में दे सकता है। चरण 3: दोनों माता पिता से अप्रभावी रूप मिलने पर बौना लक्षण दिखेगा।

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हाइड्रोजन और ऑक्सीजन से जल बनने की अभिक्रिया का संतुलित रूप किस प्रकार का है?

Which is the balanced form of the reaction in which hydrogen and oxygen form water?

Explanation opens after your attempt
Correct Answer

A. दो हाइड्रोजन अणु और एक ऑक्सीजन अणु मिलकर दो जल अणु बनाते हैंTwo hydrogen molecules and one oxygen molecule form two water molecules

Step 1

Concept

Water contains hydrogen and oxygen in a fixed ratio.

Step 2

Why this answer is correct

A balanced equation must have equal hydrogen and oxygen atoms on both sides.

Step 3

Exam Tip

Therefore two hydrogen molecules and one oxygen molecule form two water molecules. चरण 1: जल में हाइड्रोजन और ऑक्सीजन निश्चित अनुपात में होते हैं। चरण 2: संतुलन में दोनों ओर हाइड्रोजन और ऑक्सीजन परमाणु बराबर होने चाहिए। चरण 3: इसलिए दो हाइड्रोजन अणु और एक ऑक्सीजन अणु से दो जल अणु बनते हैं।

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लिनियर बी लिपि के पढ़े जाने से किस सभ्यता की यूनानी प्रकृति स्पष्ट हुई?

The decipherment of Linear B made the Greek nature of which civilization clear?

Explanation opens after your attempt
Correct Answer

C. माइसीनियाईMycenaean

Step 1

Concept

Linear B proved to be linked with Mycenaean Greek administration. For exams connect it with the Aegean Bronze Age.

Step 2

Why this answer is correct

The correct answer is C. माइसीनियाई / Mycenaean. Linear B proved to be linked with Mycenaean Greek administration. For exams connect it with the Aegean Bronze Age.

Step 3

Exam Tip

लिनियर बी माइसीनियाई यूनानी प्रशासन से जुड़ी लिपि सिद्ध हुई। परीक्षा में इसे एजियन कांस्य युग से जोड़ें।

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लिनियर बी पट्टिकाएं साहित्य से अधिक किस प्रकार की जानकारी देती हैं?

Linear B tablets provide more of what type of information than literature?

Explanation opens after your attempt
Correct Answer

A. प्रशासनिक और आर्थिक रिकॉर्डAdministrative and economic records

Step 1

Concept

Linear B records provide information about palace administration and economy. Identify the type of source in exams.

Step 2

Why this answer is correct

The correct answer is A. प्रशासनिक और आर्थिक रिकॉर्ड / Administrative and economic records. Linear B records provide information about palace administration and economy. Identify the type of source in exams.

Step 3

Exam Tip

लिनियर बी अभिलेख महल प्रशासन और अर्थव्यवस्था की जानकारी देते हैं। परीक्षा में स्रोत के प्रकार को पहचानें।

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माइसीनियन लिनियर बी पट्टिकाएं किस तरह की जानकारी के लिए महत्वपूर्ण हैं?

Mycenaean Linear B tablets are important for what kind of information?

Explanation opens after your attempt
Correct Answer

A. प्रशासनिक और आर्थिक अभिलेखAdministrative and economic records

Step 1

Concept

Linear B tablets show Mycenaean administration and economy. Connect them with Bronze Age Greece.

Step 2

Why this answer is correct

The correct answer is A. प्रशासनिक और आर्थिक अभिलेख / Administrative and economic records. Linear B tablets show Mycenaean administration and economy. Connect them with Bronze Age Greece.

Step 3

Exam Tip

लिनियर बी पट्टिकाएं माइसीनियन प्रशासन और अर्थव्यवस्था बताती हैं। परीक्षा में इन्हें कांस्य युगीन यूनान से जोड़ें।

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माइसीनियन लिनियर बी अभिलेख इतिहासकारों के लिए क्यों महत्वपूर्ण हैं?

Why are Mycenaean Linear B records important for historians?

Explanation opens after your attempt
Correct Answer

A. वे प्रशासनिक और आर्थिक जानकारी देते हैंThey provide administrative and economic information

Step 1

Concept

Linear B tablets give information about Mycenaean administration and economy. Connect them with Bronze Age Greece.

Step 2

Why this answer is correct

The correct answer is A. वे प्रशासनिक और आर्थिक जानकारी देते हैं / They provide administrative and economic information. Linear B tablets give information about Mycenaean administration and economy. Connect them with Bronze Age Greece.

Step 3

Exam Tip

लिनियर बी पट्टिकाएं माइसीनियन प्रशासन और अर्थव्यवस्था की जानकारी देती हैं। परीक्षा में इन्हें कांस्य युगीन यूनान से जोड़ें।

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माइसीनियन लिनियर बी अभिलेख किस प्रकार की जानकारी देते हैं?

What kind of information do Mycenaean Linear B records provide?

Explanation opens after your attempt
Correct Answer

A. प्रशासनिक और आर्थिक जानकारीAdministrative and economic information

Step 1

Concept

Linear B tablets provide administrative and economic information. Connect them with Bronze Age Greece.

Step 2

Why this answer is correct

The correct answer is A. प्रशासनिक और आर्थिक जानकारी / Administrative and economic information. Linear B tablets provide administrative and economic information. Connect them with Bronze Age Greece.

Step 3

Exam Tip

लिनियर बी पट्टिकाएं प्रशासन और अर्थव्यवस्था से जुड़ी जानकारी देती हैं। परीक्षा में इन्हें कांस्य युगीन यूनान से जोड़ें।

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माइसीनियन लिनियर बी लिपि का महत्व क्या है?

What is the significance of Mycenaean Linear B script?

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Correct Answer

C. यह प्राचीन यूनानी भाषा के प्रशासनिक अभिलेखों से जुड़ी हैIt is linked with administrative records in ancient Greek

Step 1

Concept

Linear B is linked with Mycenaean administrative records and ancient Greek. Remember it with Bronze Age Greece.

Step 2

Why this answer is correct

The correct answer is C. यह प्राचीन यूनानी भाषा के प्रशासनिक अभिलेखों से जुड़ी है / It is linked with administrative records in ancient Greek. Linear B is linked with Mycenaean administrative records and ancient Greek. Remember it with Bronze Age Greece.

Step 3

Exam Tip

लिनियर बी को माइसीनियन प्रशासनिक अभिलेखों और प्राचीन यूनानी से जोड़ा जाता है। परीक्षा में इसे कांस्य युगीन यूनान से याद रखें।

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माइसीनियन सभ्यता की लिपि लिनियर बी किस भाषा से जुड़ी मानी जाती है?

The Linear B script of Mycenaean civilization is associated with which language?

Explanation opens after your attempt
Correct Answer

A. प्राचीन यूनानीAncient Greek

Step 1

Concept

Linear B is linked with Ancient Greek. In exams, remember it with Mycenaean administrative records.

Step 2

Why this answer is correct

The correct answer is A. प्राचीन यूनानी / Ancient Greek. Linear B is linked with Ancient Greek. In exams, remember it with Mycenaean administrative records.

Step 3

Exam Tip

लिनियर बी को प्राचीन यूनानी भाषा से जोड़ा जाता है। परीक्षा में इसे माइसीनियन प्रशासनिक रिकॉर्ड से याद रखें।

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युग्म ((y+1)x+2y=3) और (5x+(y-2)y=4) के अद्वितीय हल की सही शर्त कौन-सी है?

Which condition gives a unique solution for ((y+1)x+2y=3) and (5x+(y-2)y=4)?

Explanation opens after your attempt
Correct Answer

B. \(y^2-y-12\neq0\)

Step 1

Concept

The determinant is (D=(y+1)(y-2)-10=y-2-y-12). For a unique solution, \(D\neq0\) is required.

Step 2

Why this answer is correct

The correct answer is B. \(y^2-y-12\neq0\). The determinant is (D=(y+1)(y-2)-10=y-2-y-12). For a unique solution, \(D\neq0\) is required.

Step 3

Exam Tip

सारणिक (D=(y+1)(y-2)-10=y-2-y-12) है। अद्वितीय हल के लिए \(D\neq0\) चाहिए।

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युग्म (tx+9y=6) और (20x+15y=10) के अनंत हलों के लिए (t) का मान क्या होगा?

What is the value of (t) for infinitely many solutions of (tx+9y=6) and (20x+15y=10)?

Explanation opens after your attempt
Correct Answer

C. (t=12)

Step 1

Concept

All three ratios must be \(\frac{3}{5}\). Therefore, \(\frac{t}{20}=\frac{3}{5}\) gives (t=12).

Step 2

Why this answer is correct

The correct answer is C. (t=12). All three ratios must be \(\frac{3}{5}\). Therefore, \(\frac{t}{20}=\frac{3}{5}\) gives (t=12).

Step 3

Exam Tip

तीनों अनुपात \(\frac{3}{5}\) होने चाहिए। इसलिए \(\frac{t}{20}=\frac{3}{5}\) से (t=12)।

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युग्म (sx+4y=12) और (21x+12y=40) में कोई हल न होने के लिए (s) क्या होगा?

What is (s) for no solution in (sx+4y=12) and (21x+12y=40)?

Explanation opens after your attempt
Correct Answer

C. (s=7)

Step 1

Concept

Equating coefficient ratios, \(\frac{s}{21}=\frac{4}{12}\) gives (s=7). The constant ratio is not equal.

Step 2

Why this answer is correct

The correct answer is C. (s=7). Equating coefficient ratios, \(\frac{s}{21}=\frac{4}{12}\) gives (s=7). The constant ratio is not equal.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{s}{21}=\frac{4}{12}\) से (s=7) है। स्थिर पद अनुपात समान नहीं है।

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युग्म (rx+2y=5) और (9x+3y=8) का अद्वितीय हल कब होगा?

When will (rx+2y=5) and (9x+3y=8) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(r\neq6\)

Step 1

Concept

For a unique solution, \(\frac{r}{9}\neq\frac{2}{3}\) is required. Hence \(r\neq6\).

Step 2

Why this answer is correct

The correct answer is B. \(r\neq6\). For a unique solution, \(\frac{r}{9}\neq\frac{2}{3}\) is required. Hence \(r\neq6\).

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{r}{9}\neq\frac{2}{3}\) चाहिए। इसलिए \(r\neq6\) होगा।

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युग्म (qx+11y=22) और (18x+33y=66) के अनंत हलों के लिए (q) का मान क्या है?

What is the value of (q) for infinitely many solutions of (qx+11y=22) and (18x+33y=66)?

Explanation opens after your attempt
Correct Answer

C. (q=6)

Step 1

Concept

For infinitely many solutions, \(\frac{q}{18}=\frac{11}{33}=\frac{22}{66}\). Therefore, (q=6) is correct.

Step 2

Why this answer is correct

The correct answer is C. (q=6). For infinitely many solutions, \(\frac{q}{18}=\frac{11}{33}=\frac{22}{66}\). Therefore, (q=6) is correct.

Step 3

Exam Tip

अनंत हलों में \(\frac{q}{18}=\frac{11}{33}=\frac{22}{66}\) होता है। इसलिए (q=6) सही मान है।

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युग्म (px-5y=7) और (12x-15y=19) में कोई हल न होने के लिए (p) क्या होगा?

What is (p) for no solution in (px-5y=7) and (12x-15y=19)?

Explanation opens after your attempt
Correct Answer

A. (p=4)

Step 1

Concept

Equating coefficient ratios, \(\frac{p}{12}=\frac{-5}{-15}\) gives (p=4). The constant ratio is different.

Step 2

Why this answer is correct

The correct answer is A. (p=4). Equating coefficient ratios, \(\frac{p}{12}=\frac{-5}{-15}\) gives (p=4). The constant ratio is different.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{p}{12}=\frac{-5}{-15}\) से (p=4) है। स्थिर अनुपात अलग है।

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युग्म (3x+ny=18) और (5x+10y=30) के अनंत हलों के लिए (n) क्या होगा?

For infinitely many solutions of (3x+ny=18) and (5x+10y=30), what is (n)?

Explanation opens after your attempt
Correct Answer

C. (n=6)

Step 1

Concept

For infinitely many solutions, \(\frac{3}{5}=\frac{n}{10}=\frac{18}{30}\) is needed. This gives (n=6).

Step 2

Why this answer is correct

The correct answer is C. (n=6). For infinitely many solutions, \(\frac{3}{5}=\frac{n}{10}=\frac{18}{30}\) is needed. This gives (n=6).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{3}{5}=\frac{n}{10}=\frac{18}{30}\) चाहिए। इससे (n=6) मिलता है।

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युग्म (mx+7y=13) और (16x+14y=26) का अद्वितीय हल कब होगा?

When will (mx+7y=13) and (16x+14y=26) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(m\neq8\)

Step 1

Concept

For a unique solution, \(\frac{m}{16}\neq\frac{7}{14}\) must hold. Therefore, \(m\neq8\).

Step 2

Why this answer is correct

The correct answer is B. \(m\neq8\). For a unique solution, \(\frac{m}{16}\neq\frac{7}{14}\) must hold. Therefore, \(m\neq8\).

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{m}{16}\neq\frac{7}{14}\) होना चाहिए। इसलिए \(m\neq8\)।

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युग्म (2x+3y=4) और (kx+6y=11) में कोई हल न होने के लिए (k) का मान क्या है?

What is the value of (k) for no solution in (2x+3y=4) and (kx+6y=11)?

Explanation opens after your attempt
Correct Answer

C. (k=4)

Step 1

Concept

Equating coefficient ratios, \(\frac{2}{k}=\frac{3}{6}\) gives (k=4). The constant ratio is different.

Step 2

Why this answer is correct

The correct answer is C. (k=4). Equating coefficient ratios, \(\frac{2}{k}=\frac{3}{6}\) gives (k=4). The constant ratio is different.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{2}{k}=\frac{3}{6}\) से (k=4) है। स्थिर पद अनुपात अलग है।

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युग्म (jx+5y=10) और (14x+7y=14) के अनंत हलों के लिए (j) क्या होगा?

For infinitely many solutions of (jx+5y=10) and (14x+7y=14), what is (j)?

Explanation opens after your attempt
Correct Answer

C. (j=10)

Step 1

Concept

All three ratios must be \(\frac{5}{7}\). Therefore, \(\frac{j}{14}=\frac{5}{7}\) gives (j=10).

Step 2

Why this answer is correct

The correct answer is C. (j=10). All three ratios must be \(\frac{5}{7}\). Therefore, \(\frac{j}{14}=\frac{5}{7}\) gives (j=10).

Step 3

Exam Tip

तीनों अनुपात \(\frac{5}{7}\) होने चाहिए। इसलिए \(\frac{j}{14}=\frac{5}{7}\) से (j=10)।

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युग्म (6x+iy=12) और (18x+27y=50) में कोई हल न होने के लिए (i) का मान क्या है?

What is the value of (i) for no solution in (6x+iy=12) and (18x+27y=50)?

Explanation opens after your attempt
Correct Answer

D. (i=9)

Step 1

Concept

Equating coefficient ratios, \(\frac{6}{18}=\frac{i}{27}\) gives (i=9). The constant ratio is not equal.

Step 2

Why this answer is correct

The correct answer is D. (i=9). Equating coefficient ratios, \(\frac{6}{18}=\frac{i}{27}\) gives (i=9). The constant ratio is not equal.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{6}{18}=\frac{i}{27}\) से (i=9) आता है। स्थिर पद अनुपात समान नहीं है।

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युग्म (hx+12y=6) और (10x+15y=20) का अद्वितीय हल कब होगा?

When will (hx+12y=6) and (10x+15y=20) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(h\neq8\)

Step 1

Concept

For a unique solution, \(\frac{h}{10}\neq\frac{12}{15}\) must hold. Hence \(h\neq8\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(h\neq8\). For a unique solution, \(\frac{h}{10}\neq\frac{12}{15}\) must hold. Hence \(h\neq8\) is correct.

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{h}{10}\neq\frac{12}{15}\) होना चाहिए। इसलिए \(h\neq8\) सही है।

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युग्म ((g-1)x+10y=15) और (8x+20y=30) के अनंत हलों के लिए (g) क्या होगा?

For infinitely many solutions of ((g-1)x+10y=15) and (8x+20y=30), what is (g)?

Explanation opens after your attempt
Correct Answer

B. (g=5)

Step 1

Concept

For infinitely many solutions, \(\frac{g-1}{8}=\frac{10}{20}=\frac{15}{30}\) must hold. This gives (g=5).

Step 2

Why this answer is correct

The correct answer is B. (g=5). For infinitely many solutions, \(\frac{g-1}{8}=\frac{10}{20}=\frac{15}{30}\) must hold. This gives (g=5).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{g-1}{8}=\frac{10}{20}=\frac{15}{30}\) होना चाहिए। इससे (g=5) मिलता है।

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युग्म (7x+fy=2) और (28x+20y=13) में कोई हल न होने के लिए (f) क्या होगा?

What is (f) for no solution in (7x+fy=2) and (28x+20y=13)?

Explanation opens after your attempt
Correct Answer

B. (f=5)

Step 1

Concept

To make the coefficient ratio \(\frac{1}{4}\), (f=5) is required. The different constant ratio gives no solution.

Step 2

Why this answer is correct

The correct answer is B. (f=5). To make the coefficient ratio \(\frac{1}{4}\), (f=5) is required. The different constant ratio gives no solution.

Step 3

Exam Tip

गुणांक अनुपात \(\frac{1}{4}\) बनाने के लिए (f=5) चाहिए। स्थिर पद अनुपात अलग होने से कोई हल नहीं होगा।

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युग्म (ex-4y=9) और (18x-12y=27) का अद्वितीय हल कब होगा?

When will (ex-4y=9) and (18x-12y=27) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(e\neq6\)

Step 1

Concept

For a unique solution, \(\frac{e}{18}\neq\frac{-4}{-12}\) is needed. Hence \(e\neq6\).

Step 2

Why this answer is correct

The correct answer is B. \(e\neq6\). For a unique solution, \(\frac{e}{18}\neq\frac{-4}{-12}\) is needed. Hence \(e\neq6\).

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{e}{18}\neq\frac{-4}{-12}\) चाहिए। अतः \(e\neq6\)।

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युग्म (4x+dy=7) और (12x+15y=21) के अनंत हलों के लिए (d) का मान क्या है?

What is the value of (d) for infinitely many solutions of (4x+dy=7) and (12x+15y=21)?

Explanation opens after your attempt
Correct Answer

C. (d=5)

Step 1

Concept

For infinitely many solutions, \(\frac{4}{12}=\frac{d}{15}=\frac{7}{21}\) must hold. So (d=5) is correct.

Step 2

Why this answer is correct

The correct answer is C. (d=5). For infinitely many solutions, \(\frac{4}{12}=\frac{d}{15}=\frac{7}{21}\) must hold. So (d=5) is correct.

Step 3

Exam Tip

अनंत हलों में \(\frac{4}{12}=\frac{d}{15}=\frac{7}{21}\) होना चाहिए। इसलिए (d=5) सही है।

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युग्म (cx+6y=5) और (9x+18y=10) में कोई हल न होने के लिए (c) क्या होगा?

What is (c) for no solution in (cx+6y=5) and (9x+18y=10)?

Explanation opens after your attempt
Correct Answer

B. (c=3)

Step 1

Concept

Equating coefficient ratios, \(\frac{c}{9}=\frac{6}{18}\) gives (c=3). The constant ratio \(\frac{5}{10}\) is different.

Step 2

Why this answer is correct

The correct answer is B. (c=3). Equating coefficient ratios, \(\frac{c}{9}=\frac{6}{18}\) gives (c=3). The constant ratio \(\frac{5}{10}\) is different.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{c}{9}=\frac{6}{18}\) से (c=3) आता है। स्थिर अनुपात \(\frac{5}{10}\) अलग है।

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युग्म (2x+by=6) और (bx+8y=24) के अनंत हलों के लिए (b) का मान क्या होगा?

What is the value of (b) for infinitely many solutions of (2x+by=6) and (bx+8y=24)?

Explanation opens after your attempt
Correct Answer

C. (b=4)

Step 1

Concept

For infinitely many solutions, \(\frac{2}{b}=\frac{b}{8}=\frac{6}{24}\) must hold. This gives (b=4).

Step 2

Why this answer is correct

The correct answer is C. (b=4). For infinitely many solutions, \(\frac{2}{b}=\frac{b}{8}=\frac{6}{24}\) must hold. This gives (b=4).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{2}{b}=\frac{b}{8}=\frac{6}{24}\) होना चाहिए। इससे (b=4) मिलता है।

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युग्म (ax+2y=3) और (4x+ay=9) के अद्वितीय हल की शर्त क्या है?

What is the condition for a unique solution of (ax+2y=3) and (4x+ay=9)?

Explanation opens after your attempt
Correct Answer

B. \(a^2\neq8\)

Step 1

Concept

The determinant is \(D=a^2-8\). For a unique solution, \(D\neq0\), so \(a^2\neq8\).

Step 2

Why this answer is correct

The correct answer is B. \(a^2\neq8\). The determinant is \(D=a^2-8\). For a unique solution, \(D\neq0\), so \(a^2\neq8\).

Step 3

Exam Tip

सारणिक \(D=a^2-8\) है। अद्वितीय हल के लिए \(D\neq0\) यानी \(a^2\neq8\)।

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युग्म ((z+2)x+3y=5) और (6x+(z-1)y=7) अद्वितीय न हो, इसके लिए (z) के संभावित मान कौन-से हैं?

For ((z+2)x+3y=5) and (6x+(z-1)y=7) to be non-unique, what are the possible values of (z)?

Explanation opens after your attempt
Correct Answer

A. (z=4,-3)

Step 1

Concept

For non-unique solutions, ((z+2)(z-1)-18=0) must hold. This gives (z=4) or (z=-3).

Step 2

Why this answer is correct

The correct answer is A. (z=4,-3). For non-unique solutions, ((z+2)(z-1)-18=0) must hold. This gives (z=4) or (z=-3).

Step 3

Exam Tip

अद्वितीय न होने के लिए ((z+2)(z-1)-18=0) होना चाहिए। इससे (z=4) या (z=-3) मिलता है।

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यदि \(a_1b_2-a_2b_1\neq0\) है, तो युग्म के बारे में सही कथन क्या है?

If \(a_1b_2-a_2b_1\neq0\), what is the correct statement about the pair?

Explanation opens after your attempt
Correct Answer

C. युग्म का अद्वितीय हल हैThe pair has a unique solution

Step 1

Concept

When the determinant is non-zero, the lines intersect at one point. Hence there is a unique solution.

Step 2

Why this answer is correct

The correct answer is C. युग्म का अद्वितीय हल है / The pair has a unique solution. When the determinant is non-zero, the lines intersect at one point. Hence there is a unique solution.

Step 3

Exam Tip

सारणिक शून्य नहीं होने पर रेखाएँ एक बिंदु पर कटती हैं। इसलिए अद्वितीय हल होता है।

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यदि दो रेखाएँ अलग-अलग समांतर हैं, तो अनुपातों की सही स्थिति कौन-सी होगी?

If two lines are distinct and parallel, what is the correct ratio condition?

Explanation opens after your attempt
Correct Answer

B. \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\neq\frac{c_1}{c_2}\)

Step 1

Concept

For distinct parallel lines, coefficient ratios are equal and the constant ratio is different. This is the condition for no solution.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\neq\frac{c_1}{c_2}\). For distinct parallel lines, coefficient ratios are equal and the constant ratio is different. This is the condition for no solution.

Step 3

Exam Tip

अलग समांतर रेखाओं में गुणांक अनुपात समान और स्थिर पद अनुपात अलग होता है। यही कोई हल नहीं की शर्त है।

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यदि दो रेखाओं की ढाल समान और अवरोध भी समान हो, तो उनके समीकरणों के युग्म में कितने हल होंगे?

If two lines have the same slope and the same intercept, how many solutions will their pair of equations have?

Explanation opens after your attempt
Correct Answer

C. अनंत हलInfinitely many solutions

Step 1

Concept

Same slope and same intercept mean the same line. Therefore, such a pair has infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is C. अनंत हल / Infinitely many solutions. Same slope and same intercept mean the same line. Therefore, such a pair has infinitely many solutions.

Step 3

Exam Tip

समान ढाल और समान अवरोध का अर्थ एक ही रेखा है। इसलिए ऐसे युग्म में अनंत हल होते हैं।

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यदि \(\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\) है, तो युग्म की हल-स्थिति क्या होगी?

If \(\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\), what is the solution status of the pair?

Explanation opens after your attempt
Correct Answer

C. अनंत हलInfinitely many solutions

Step 1

Concept

When all three ratios are equal, the lines are coincident. Therefore, infinitely many solutions occur.

Step 2

Why this answer is correct

The correct answer is C. अनंत हल / Infinitely many solutions. When all three ratios are equal, the lines are coincident. Therefore, infinitely many solutions occur.

Step 3

Exam Tip

तीनों अनुपात समान होने पर रेखाएँ संपाती होती हैं। इसलिए अनंत हल मिलते हैं।

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सामान्य युग्म \(a_1x+b_1y+c_1=0\) और \(a_2x+b_2y+c_2=0\) में अद्वितीय हल की शर्त क्या है?

For the general pair \(a_1x+b_1y+c_1=0\) and \(a_2x+b_2y+c_2=0\), what is the condition for a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\)

Step 1

Concept

A unique solution occurs when the lines intersect at one point. Its ratio form is \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\).

Step 2

Why this answer is correct

The correct answer is B. \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\). A unique solution occurs when the lines intersect at one point. Its ratio form is \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\).

Step 3

Exam Tip

अद्वितीय हल तब मिलता है जब रेखाएँ एक बिंदु पर कटती हैं। इसका अनुपात रूप \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\) है।

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युग्म \(5x+\gamma y=1\) और (25x+15y=11) में कोई हल न होने के लिए \(\gamma\) का मान क्या होगा?

What is the value of \(\gamma\) for no solution in \(5x+\gamma y=1\) and (25x+15y=11)?

Explanation opens after your attempt
Correct Answer

B. \(\gamma=3\)

Step 1

Concept

Equating coefficient ratios, \(\frac{5}{25}=\frac{\gamma}{15}\) gives \(\gamma=3\). The constant ratio is different.

Step 2

Why this answer is correct

The correct answer is B. \(\gamma=3\). Equating coefficient ratios, \(\frac{5}{25}=\frac{\gamma}{15}\) gives \(\gamma=3\). The constant ratio is different.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{5}{25}=\frac{\gamma}{15}\) से \(\gamma=3\) मिलता है। स्थिर अनुपात अलग है।

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युग्म (9x+\(\beta+4\)y=15) और (27x+18y=45) के अनंत हलों के लिए \(\beta\) क्या होगा?

For infinitely many solutions of (9x+\(\beta+4\)y=15) and (27x+18y=45), what is \(\beta\)?

Explanation opens after your attempt
Correct Answer

B. \(\beta=2\)

Step 1

Concept

For infinitely many solutions, \(\frac{9}{27}=\frac{\beta+4}{18}=\frac{15}{45}\) must hold. This gives \(\beta=2\).

Step 2

Why this answer is correct

The correct answer is B. \(\beta=2\). For infinitely many solutions, \(\frac{9}{27}=\frac{\beta+4}{18}=\frac{15}{45}\) must hold. This gives \(\beta=2\).

Step 3

Exam Tip

अनंत हलों में \(\frac{9}{27}=\frac{\beta+4}{18}=\frac{15}{45}\) होना चाहिए। इससे \(\beta=2\) मिलता है।

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युग्म (\(\alpha-1\)x+5y=2) और (8x+10y=6) का अद्वितीय हल कब होगा?

When will (\(\alpha-1\)x+5y=2) and (8x+10y=6) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(\alpha\neq5\)

Step 1

Concept

For a unique solution, \(\frac{\alpha-1}{8}\neq\frac{5}{10}\) is required. Hence \(\alpha\neq5\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(\alpha\neq5\). For a unique solution, \(\frac{\alpha-1}{8}\neq\frac{5}{10}\) is required. Hence \(\alpha\neq5\) is correct.

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{\alpha-1}{8}\neq\frac{5}{10}\) चाहिए। इसलिए \(\alpha\neq5\) सही है।

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युग्म \(14x+\mu y=9\) और (21x+6y=20) में कोई हल न होने के लिए \(\mu\) क्या होगा?

What is \(\mu\) for no solution in \(14x+\mu y=9\) and (21x+6y=20)?

Explanation opens after your attempt
Correct Answer

B. \(\mu=4\)

Step 1

Concept

\(\frac{14}{21}=\frac{2}{3}\). Equating coefficient ratios, \(\frac{\mu}{6}=\frac{2}{3}\) gives \(\mu=4\).

Step 2

Why this answer is correct

The correct answer is B. \(\mu=4\). \(\frac{14}{21}=\frac{2}{3}\). Equating coefficient ratios, \(\frac{\mu}{6}=\frac{2}{3}\) gives \(\mu=4\).

Step 3

Exam Tip

\(\frac{14}{21}=\frac{2}{3}\) है। गुणांक अनुपात समान करने पर \(\frac{\mu}{6}=\frac{2}{3}\) से \(\mu=4\)।

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युग्म \(3x+2y=\lambda\) और (18x+12y=48) के अनंत हलों के लिए \(\lambda\) क्या होगा?

For infinitely many solutions of \(3x+2y=\lambda\) and (18x+12y=48), what is \(\lambda\)?

Explanation opens after your attempt
Correct Answer

B. \(\lambda=8\)

Step 1

Concept

The coefficient ratio is \(\frac{1}{6}\). For infinitely many solutions, \(\frac{\lambda}{48}=\frac{1}{6}\), so \(\lambda=8\).

Step 2

Why this answer is correct

The correct answer is B. \(\lambda=8\). The coefficient ratio is \(\frac{1}{6}\). For infinitely many solutions, \(\frac{\lambda}{48}=\frac{1}{6}\), so \(\lambda=8\).

Step 3

Exam Tip

गुणांक अनुपात \(\frac{1}{6}\) है। अनंत हलों के लिए \(\frac{\lambda}{48}=\frac{1}{6}\) इसलिए \(\lambda=8\)।

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युग्म (wx-6y=4) और (16x-24y=12) का अद्वितीय हल कब होगा?

When will (wx-6y=4) and (16x-24y=12) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(w\neq4\)

Step 1

Concept

For a unique solution, \(\frac{w}{16}\neq\frac{-6}{-24}\) must hold. Therefore, \(w\neq4\).

Step 2

Why this answer is correct

The correct answer is B. \(w\neq4\). For a unique solution, \(\frac{w}{16}\neq\frac{-6}{-24}\) must hold. Therefore, \(w\neq4\).

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{w}{16}\neq\frac{-6}{-24}\) होना चाहिए। इसलिए \(w\neq4\) होगा।

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युग्म (5x+(v-2)y=3) और (15x+9y=14) में कोई हल न होने के लिए (v) का मान क्या है?

What is the value of (v) for no solution in (5x+(v-2)y=3) and (15x+9y=14)?

Explanation opens after your attempt
Correct Answer

C. (v=5)

Step 1

Concept

Equating coefficient ratios gives (v-2=3). Thus (v=5), and the different constant ratio gives no solution.

Step 2

Why this answer is correct

The correct answer is C. (v=5). Equating coefficient ratios gives (v-2=3). Thus (v=5), and the different constant ratio gives no solution.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर (v-2=3) मिलता है। इसलिए (v=5) और स्थिर अनुपात अलग होने से कोई हल नहीं।

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युग्म ((u+3)x+8y=16) और (10x+20y=40) के अनंत हलों के लिए (u) क्या होगा?

For infinitely many solutions of ((u+3)x+8y=16) and (10x+20y=40), what is (u)?

Explanation opens after your attempt
Correct Answer

A. (u=1)

Step 1

Concept

For infinitely many solutions, \(\frac{u+3}{10}=\frac{8}{20}=\frac{16}{40}\) is needed. This gives (u=1).

Step 2

Why this answer is correct

The correct answer is A. (u=1). For infinitely many solutions, \(\frac{u+3}{10}=\frac{8}{20}=\frac{16}{40}\) is needed. This gives (u=1).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{u+3}{10}=\frac{8}{20}=\frac{16}{40}\) चाहिए। इससे (u=1) मिलता है।

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युग्म (12x-7y=5) और (18x-11y=8) की हल-संख्या क्या है?

What is the number of solutions of (12x-7y=5) and (18x-11y=8)?

Explanation opens after your attempt
Correct Answer

C. अद्वितीय हलUnique solution

Step 1

Concept

Since \(\frac{12}{18}\neq\frac{-7}{-11}\), the lines intersect. Hence a unique solution is obtained.

Step 2

Why this answer is correct

The correct answer is C. अद्वितीय हल / Unique solution. Since \(\frac{12}{18}\neq\frac{-7}{-11}\), the lines intersect. Hence a unique solution is obtained.

Step 3

Exam Tip

\(\frac{12}{18}\neq\frac{-7}{-11}\) होने से रेखाएँ काटती हैं। इसलिए अद्वितीय हल मिलेगा।

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युग्म (13x+4y=6) और (26x+8y=12) के लिए सही विकल्प चुनिए।

Choose the correct option for (13x+4y=6) and (26x+8y=12).

Explanation opens after your attempt
Correct Answer

C. अनंत हलInfinitely many solutions

Step 1

Concept

All three ratios are equal. Thus the lines are coincident and the pair has infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is C. अनंत हल / Infinitely many solutions. All three ratios are equal. Thus the lines are coincident and the pair has infinitely many solutions.

Step 3

Exam Tip

तीनों अनुपात समान हैं। अतः रेखाएँ संपाती हैं और युग्म के अनंत हल हैं।

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युग्म (4x+9y=2) और (8x+18y=7) की हल-स्थिति क्या है?

What is the solution status of (4x+9y=2) and (8x+18y=7)?

Explanation opens after your attempt
Correct Answer

B. कोई हल नहींNo solution

Step 1

Concept

The coefficient ratio is equal but \(\frac{2}{7}\) is different. Hence both are distinct parallel lines.

Step 2

Why this answer is correct

The correct answer is B. कोई हल नहीं / No solution. The coefficient ratio is equal but \(\frac{2}{7}\) is different. Hence both are distinct parallel lines.

Step 3

Exam Tip

गुणांक अनुपात समान है लेकिन \(\frac{2}{7}\) अलग है। इसलिए दोनों अलग समांतर रेखाएँ हैं।

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युग्म (10x+3y=17) और (20x+9y=31) में कितने हल होंगे?

How many solutions will the pair (10x+3y=17) and (20x+9y=31) have?

Explanation opens after your attempt
Correct Answer

C. अद्वितीय हलUnique solution

Step 1

Concept

Here \(\frac{10}{20}\neq\frac{3}{9}\). Therefore, the lines meet at one point.

Step 2

Why this answer is correct

The correct answer is C. अद्वितीय हल / Unique solution. Here \(\frac{10}{20}\neq\frac{3}{9}\). Therefore, the lines meet at one point.

Step 3

Exam Tip

यहाँ \(\frac{10}{20}\neq\frac{3}{9}\) है। इसलिए रेखाएँ एक बिंदु पर मिलती हैं।

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रेखाएँ (9x-5y=13) और (18x-10y=26) के लिए सही निष्कर्ष क्या है?

What is the correct conclusion for the lines (9x-5y=13) and (18x-10y=26)?

Explanation opens after your attempt
Correct Answer

C. अनंत हलInfinitely many solutions

Step 1

Concept

The second equation is (2) times the first. So both lines are coincident and give infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is C. अनंत हल / Infinitely many solutions. The second equation is (2) times the first. So both lines are coincident and give infinitely many solutions.

Step 3

Exam Tip

दूसरा समीकरण पहले का (2) गुना है। इसलिए दोनों रेखाएँ संपाती हैं और अनंत हल देती हैं।

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रेखाएँ (7x+2y=9) और (21x+6y=25) किस प्रकार का युग्म बनाती हैं?

What type of pair is formed by the lines (7x+2y=9) and (21x+6y=25)?

Explanation opens after your attempt
Correct Answer

C. असंगतInconsistent

Step 1

Concept

Coefficient ratios are equal but the constant ratio is different. Hence the lines are parallel and the pair is inconsistent.

Step 2

Why this answer is correct

The correct answer is C. असंगत / Inconsistent. Coefficient ratios are equal but the constant ratio is different. Hence the lines are parallel and the pair is inconsistent.

Step 3

Exam Tip

गुणांक अनुपात समान है पर स्थिर पद का अनुपात अलग है। इसलिए रेखाएँ समांतर हैं और युग्म असंगत है।

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युग्म (6x-ty=18) और (14x-21y=42) के अनंत हलों के लिए (t) का मान क्या होगा?

What is the value of (t) for infinitely many solutions of (6x-ty=18) and (14x-21y=42)?

Explanation opens after your attempt
Correct Answer

C. (t=9)

Step 1

Concept

For infinitely many solutions, \(\frac{6}{14}=\frac{-t}{-21}=\frac{18}{42}\) must hold. This gives (t=9).

Step 2

Why this answer is correct

The correct answer is C. (t=9). For infinitely many solutions, \(\frac{6}{14}=\frac{-t}{-21}=\frac{18}{42}\) must hold. This gives (t=9).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{6}{14}=\frac{-t}{-21}=\frac{18}{42}\) होना चाहिए। इससे (t=9) मिलता है।

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युग्म (11x+3y=4) और (22x+sy=10) का अद्वितीय हल कब होगा?

When will (11x+3y=4) and (22x+sy=10) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(s\neq6\)

Step 1

Concept

For a unique solution, \(\frac{11}{22}\neq\frac{3}{s}\) must hold. Hence \(s\neq6\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(s\neq6\). For a unique solution, \(\frac{11}{22}\neq\frac{3}{s}\) must hold. Hence \(s\neq6\) is correct.

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{11}{22}\neq\frac{3}{s}\) होना चाहिए। अतः \(s\neq6\) सही है।

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युग्म (2x+ny=7) और (6x+15y=19) में कोई हल न होने के लिए (n) का मान क्या है?

What is the value of (n) for no solution in (2x+ny=7) and (6x+15y=19)?

Explanation opens after your attempt
Correct Answer

C. (n=5)

Step 1

Concept

Equating coefficient ratios, \(\frac{2}{6}=\frac{n}{15}\) gives (n=5). The constant ratio is different, so the pair is inconsistent.

Step 2

Why this answer is correct

The correct answer is C. (n=5). Equating coefficient ratios, \(\frac{2}{6}=\frac{n}{15}\) gives (n=5). The constant ratio is different, so the pair is inconsistent.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर \(\frac{2}{6}=\frac{n}{15}\) से (n=5) मिलता है। स्थिर अनुपात अलग है इसलिए युग्म असंगत है।

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युग्म (5x+(r+1)y=11) और (15x+18y=33) के अनंत हलों के लिए (r) क्या होगा?

For infinitely many solutions of (5x+(r+1)y=11) and (15x+18y=33), what is (r)?

Explanation opens after your attempt
Correct Answer

B. (r=5)

Step 1

Concept

For infinitely many solutions, \(\frac{5}{15}=\frac{r+1}{18}=\frac{11}{33}\) is needed. This gives (r=5).

Step 2

Why this answer is correct

The correct answer is B. (r=5). For infinitely many solutions, \(\frac{5}{15}=\frac{r+1}{18}=\frac{11}{33}\) is needed. This gives (r=5).

Step 3

Exam Tip

अनंत हलों के लिए \(\frac{5}{15}=\frac{r+1}{18}=\frac{11}{33}\) चाहिए। इससे (r=5) मिलता है।

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युग्म (qx+4y=9) और (15x+10y=18) का अद्वितीय हल कब होगा?

When will (qx+4y=9) and (15x+10y=18) have a unique solution?

Explanation opens after your attempt
Correct Answer

A. \(q\neq6\)

Step 1

Concept

For a unique solution, \(\frac{q}{15}\neq\frac{4}{10}\) must hold. Hence \(q\neq6\) is correct.

Step 2

Why this answer is correct

The correct answer is A. \(q\neq6\). For a unique solution, \(\frac{q}{15}\neq\frac{4}{10}\) must hold. Hence \(q\neq6\) is correct.

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{q}{15}\neq\frac{4}{10}\) होना चाहिए। इसलिए \(q\neq6\) सही शर्त है।

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युग्म (3x-2y=5) और (12x-8y=c) में कोई हल न हो इसके लिए (c) पर कौन-सी शर्त होगी?

For (3x-2y=5) and (12x-8y=c) to have no solution, what condition is required on (c)?

Explanation opens after your attempt
Correct Answer

B. \(c\neq20\)

Step 1

Concept

The coefficient ratio is \(\frac{1}{4}\). For no solution, \(\frac{5}{c}\neq\frac{1}{4}\), so \(c\neq20\).

Step 2

Why this answer is correct

The correct answer is B. \(c\neq20\). The coefficient ratio is \(\frac{1}{4}\). For no solution, \(\frac{5}{c}\neq\frac{1}{4}\), so \(c\neq20\).

Step 3

Exam Tip

गुणांक अनुपात \(\frac{1}{4}\) है। कोई हल नहीं के लिए \(\frac{5}{c}\neq\frac{1}{4}\) इसलिए \(c\neq20\)।

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युग्म (8x+ay=12) और (20x+10y=30) के अनंत हलों के लिए (a) का मान बताइए।

Find the value of (a) for infinitely many solutions of (8x+ay=12) and (20x+10y=30).

Explanation opens after your attempt
Correct Answer

B. (a=4)

Step 1

Concept

Here \(\frac{8}{20}=\frac{12}{30}\). Thus \(\frac{a}{10}=\frac{2}{5}\) gives (a=4).

Step 2

Why this answer is correct

The correct answer is B. (a=4). Here \(\frac{8}{20}=\frac{12}{30}\). Thus \(\frac{a}{10}=\frac{2}{5}\) gives (a=4).

Step 3

Exam Tip

यहाँ \(\frac{8}{20}=\frac{12}{30}\) है। अतः \(\frac{a}{10}=\frac{2}{5}\) से (a=4) होगा।

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युग्म ((p-2)x+7y=14) और (9x+21y=42) के अनंत हलों के लिए (p) क्या होगा?

For infinitely many solutions of ((p-2)x+7y=14) and (9x+21y=42), what is (p)?

Explanation opens after your attempt
Correct Answer

C. (p=5)

Step 1

Concept

For infinitely many solutions, all three ratios must be equal. From \(\frac{p-2}{9}=\frac{7}{21}\), (p=5).

Step 2

Why this answer is correct

The correct answer is C. (p=5). For infinitely many solutions, all three ratios must be equal. From \(\frac{p-2}{9}=\frac{7}{21}\), (p=5).

Step 3

Exam Tip

अनंत हलों के लिए तीनों अनुपात समान होने चाहिए। \(\frac{p-2}{9}=\frac{7}{21}\) से (p=5) मिलता है।

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युग्म (4x+my=8) और (10x+15y=21) में कोई हल न होने के लिए (m) का मान क्या है?

What is the value of (m) for no solution in (4x+my=8) and (10x+15y=21)?

Explanation opens after your attempt
Correct Answer

C. (m=6)

Step 1

Concept

Equating coefficient ratios gives (m=6). The constant ratio is different, so there is no solution.

Step 2

Why this answer is correct

The correct answer is C. (m=6). Equating coefficient ratios gives (m=6). The constant ratio is different, so there is no solution.

Step 3

Exam Tip

गुणांक अनुपात समान करने पर (m=6) मिलता है। स्थिर पद का अनुपात अलग है इसलिए कोई हल नहीं होगा।

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युग्म (kx+5y=10) और (6x+15y=18) का अद्वितीय हल कब होगा?

When will the pair (kx+5y=10) and (6x+15y=18) have a unique solution?

Explanation opens after your attempt
Correct Answer

B. \(k\neq2\)

Step 1

Concept

For a unique solution, \(\frac{k}{6}\neq\frac{5}{15}\) must hold. Therefore, \(k\neq2\) is correct.

Step 2

Why this answer is correct

The correct answer is B. \(k\neq2\). For a unique solution, \(\frac{k}{6}\neq\frac{5}{15}\) must hold. Therefore, \(k\neq2\) is correct.

Step 3

Exam Tip

अद्वितीय हल के लिए \(\frac{k}{6}\neq\frac{5}{15}\) होना चाहिए। इसलिए \(k\neq2\) सही है।

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समीकरणों (21x+8y=97) और (42x+16y=194) को देखकर कौन-सा कथन सही है?

Which statement is correct by observing the equations (21x+8y=97) and (42x+16y=194)?

Explanation opens after your attempt
Correct Answer

B. रेखाएं एक ही हैंLines are the same

Step 1

Concept

The second equation is (2) times the first. Therefore, both lines are the same and have infinitely many solutions.

Step 2

Why this answer is correct

The correct answer is B. रेखाएं एक ही हैं / Lines are the same. The second equation is (2) times the first. Therefore, both lines are the same and have infinitely many solutions.

Step 3

Exam Tip

दूसरा समीकरण पहले का (2) गुना है। इसलिए दोनों रेखाएं एक ही हैं और अनंत हल हैं।

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दो वस्तुओं की कीमतों के लिए (10x+3y=470) और (20x+6y=955) समीकरण बने। यह प्रणाली कैसी है?

For prices of two items, the equations (10x+3y=470) and (20x+6y=955) are formed. What type of system is this?

Explanation opens after your attempt
Correct Answer

C. असंगतInconsistent

Step 1

Concept

The first two ratios are equal but (470/955) is different. Therefore, the system is inconsistent.

Step 2

Why this answer is correct

The correct answer is C. असंगत / Inconsistent. The first two ratios are equal but (470/955) is different. Therefore, the system is inconsistent.

Step 3

Exam Tip

पहले दो अनुपात बराबर हैं लेकिन (470/955) अलग है। इसलिए प्रणाली असंगत है।

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समीकरणों (7x+19y=86) और (13x+35y=158) में (a) और (b) के अनुपातों की तुलना से क्या निष्कर्ष निकलेगा?

What conclusion follows from comparing the ratios of (a) and (b) in the equations (7x+19y=86) and (13x+35y=158)?

Explanation opens after your attempt
Correct Answer

C. (713 \ne 19 / 35), इसलिए एक अद्वितीय हल / 35), so one unique solution

Step 1

Concept

The first two ratios are different. Therefore, the lines intersect at one point and give one unique solution.

Step 2

Why this answer is correct

The correct answer is C. \(7 / 13 \ne 19 / 35\), इसलिए एक अद्वितीय हल / 35), so one unique solution. The first two ratios are different. Therefore, the lines intersect at one point and give one unique solution.

Step 3

Exam Tip

पहले दो अनुपात अलग हैं। इसलिए रेखाएं एक बिंदु पर कटती हैं और एक अद्वितीय हल देती हैं।

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