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Class 11 Mathematics Hard Quiz

Level 42 • 50/50 questions • 30 seconds per question.

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Time Left 25:00 30 sec/question
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Question 1 / 50 0 score
Answered 0/50 Correct 0 Time 25:00

यदि \( -4<x\leq 2 \), तो (3x-1) का सही परिसर कौन सा है?

If \( -4<x\leq 2 \), what is the correct range of (3x-1)?

Explanation opens after your attempt
Correct Answer

A. \( -13<3x-1\leq 5 \)

Step 1

Concept

Multiplying the whole inequality by (3) and subtracting (1) gives \( -13<3x-1\leq 5 \). Positive multiplication does not change the sign.

Step 2

Why this answer is correct

The correct answer is A. \( -13<3x-1\leq 5 \). Multiplying the whole inequality by (3) and subtracting (1) gives \( -13<3x-1\leq 5 \). Positive multiplication does not change the sign.

Step 3

Exam Tip

पूरी असमानता को (3) से गुणा करके (1) घटाने पर \( -13<3x-1\leq 5 \) मिलता है। धनात्मक गुणन में चिन्ह नहीं बदलता।

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असमानता ( -3x+5>14 ) का हल समुच्चय क्या है?

What is the solution set of the inequality ( -3x+5>14 )?

Explanation opens after your attempt
Correct Answer

A. (x<-3)

Step 1

Concept

From ( -3x>9 ), we get (x<-3) because division by ( -3 ) reverses the sign. Always check the sign in the last step.

Step 2

Why this answer is correct

The correct answer is A. (x<-3). From ( -3x>9 ), we get (x<-3) because division by ( -3 ) reverses the sign. Always check the sign in the last step.

Step 3

Exam Tip

( -3x>9 ) से (x<-3) मिलेगा क्योंकि ( -3 ) से भाग देने पर चिन्ह उलटता है। अंतिम चरण में चिन्ह जरूर जांचें।

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यदि \(x\in \mathbb{Z}\) और \( \frac{x+2}{3}>1 \) तथा (x<9), तो कितने पूर्णांक हल हैं?

If \(x\in \mathbb{Z}\) and \( \frac{x+2}{3}>1 \) and (x<9), how many integer solutions are there?

Explanation opens after your attempt
Correct Answer

A. (5)

Step 1

Concept

The first condition gives (x>1) and the second gives (x<9), so (x=2,3,4,5,6,7,8), which are (7) integers. Always list integer endpoints carefully.

Step 2

Why this answer is correct

The correct answer is A. (5). The first condition gives (x>1) and the second gives (x<9), so (x=2,3,4,5,6,7,8), which are (7) integers. Always list integer endpoints carefully.

Step 3

Exam Tip

पहली शर्त से (x>1) और दूसरी से (x<9) है इसलिए (x=2,3,4,5,6,7,8) कुल (7) नहीं बल्कि विकल्प जांचने पर (7) होना चाहिए।

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कौन सा अंतराल असमानता \(2<x\leq 7\) को दर्शाता है?

Which interval represents the inequality \(2<x\leq 7\)?

Explanation opens after your attempt
Correct Answer

B. ( (2,7] )

Step 1

Concept

(2) is not included and (7) is included, so the interval is ( (2,7] ). Watch open and closed brackets carefully.

Step 2

Why this answer is correct

The correct answer is B. ( (2,7] ). (2) is not included and (7) is included, so the interval is ( (2,7] ). Watch open and closed brackets carefully.

Step 3

Exam Tip

(2) शामिल नहीं है और (7) शामिल है इसलिए अंतराल ( (2,7] ) है। खुले और बंद ब्रैकेट पर ध्यान दें।

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यदि \( -6\leq x<0 \), तो \( \frac{x}{-2} \) का सही परिसर क्या है?

If \( -6\leq x<0 \), what is the correct range of \( \frac{x}{-2} \)?

Explanation opens after your attempt
Correct Answer

A. \(0<\frac{x}{-2}\leq 3\)

Step 1

Concept

Dividing by (-2) reverses the direction and gives \(3\geq \frac{x}{-2}>0\). In increasing order, it is \(0<\frac{x}{-2}\leq 3\).

Step 2

Why this answer is correct

The correct answer is A. \(0<\frac{x}{-2}\leq 3\). Dividing by (-2) reverses the direction and gives \(3\geq \frac{x}{-2}>0\). In increasing order, it is \(0<\frac{x}{-2}\leq 3\).

Step 3

Exam Tip

(-2) से भाग देने पर दिशा उलटती है और \(3\geq \frac{x}{-2}>0\) मिलता है। इसे बढ़ते क्रम में \(0<\frac{x}{-2}\leq 3\) लिखते हैं।

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यदि \(x\in \mathbb{R}\) और \(x^2<0\), तो हल समुच्चय क्या है?

If \(x\in \mathbb{R}\) and \(x^2<0\), what is the solution set?

Explanation opens after your attempt
Correct Answer

C. \( \emptyset \)

Step 1

Concept

For every real (x), \(x^2\geq 0\), so \(x^2<0\) is impossible. In such questions, check the basic property first.

Step 2

Why this answer is correct

The correct answer is C. \( \emptyset \). For every real (x), \(x^2\geq 0\), so \(x^2<0\) is impossible. In such questions, check the basic property first.

Step 3

Exam Tip

किसी भी वास्तविक (x) के लिए \(x^2\geq 0\) होता है इसलिए \(x^2<0\) असंभव है। ऐसे प्रश्नों में पहले मूल गुण देखें।

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कौन सी असमानता (x=4) को हल में शामिल करती है लेकिन (x=3) को शामिल नहीं करती?

Which inequality includes (x=4) in its solution but does not include (x=3)?

Explanation opens after your attempt
Correct Answer

B. \(2x-5\geq 3\)

Step 1

Concept

\(2x-5\geq 3\) gives \(x\geq 4\), so (4) is included and (3) is not. Always check equality at boundary options.

Step 2

Why this answer is correct

The correct answer is B. \(2x-5\geq 3\). \(2x-5\geq 3\) gives \(x\geq 4\), so (4) is included and (3) is not. Always check equality at boundary options.

Step 3

Exam Tip

\(2x-5\geq 3\) से \(x\geq 4\) मिलता है इसलिए (4) शामिल है और (3) नहीं। सीमा वाले विकल्प में बराबरी जरूर जांचें।

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असमानता \( \frac{x-2}{3}\geq 4 \) का सही हल क्या है?

What is the correct solution of \( \frac{x-2}{3}\geq 4 \)?

Explanation opens after your attempt
Correct Answer

C. \(x\geq 14\)

Step 1

Concept

Since (3) is positive, the sign does not change and \(x-2\geq 12\) gives \(x\geq 14\). With positive multiplication, the sign remains the same.

Step 2

Why this answer is correct

The correct answer is C. \(x\geq 14\). Since (3) is positive, the sign does not change and \(x-2\geq 12\) gives \(x\geq 14\). With positive multiplication, the sign remains the same.

Step 3

Exam Tip

(3) धनात्मक है इसलिए चिन्ह नहीं बदलता और \(x-2\geq 12\) से \(x\geq 14\) मिलता है। धनात्मक गुणन में चिन्ह वैसा ही रहता है।

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यदि (a<0) और (b>0), तो (ab) के बारे में कौन सा कथन हमेशा सत्य है?

If (a<0) and (b>0), which statement about (ab) is always true?

Explanation opens after your attempt
Correct Answer

B. (ab<0)

Step 1

Concept

The product of a negative and a positive number is always negative, so (ab<0). In sign-based questions, also check the possibility of zero.

Step 2

Why this answer is correct

The correct answer is B. (ab<0). The product of a negative and a positive number is always negative, so (ab<0). In sign-based questions, also check the possibility of zero.

Step 3

Exam Tip

ऋणात्मक और धनात्मक संख्या का गुणनफल हमेशा ऋणात्मक होता है इसलिए (ab<0)। चिन्ह आधारित प्रश्नों में शून्य की संभावना भी देखें।

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असमानता \( \frac{x+1}{-4}<2 \) का हल क्या है?

What is the solution of \( \frac{x+1}{-4}<2 \)?

Explanation opens after your attempt
Correct Answer

B. (x+1>-8) इसलिए (x>-9)(x+1>-8) so (x>-9)

Step 1

Concept

Multiplying by ( -4 ) reverses the sign to (x+1>-8). Be extra careful when the denominator is negative.

Step 2

Why this answer is correct

The correct answer is B. (x+1>-8) इसलिए (x>-9) / (x+1>-8) so (x>-9). Multiplying by ( -4 ) reverses the sign to (x+1>-8). Be extra careful when the denominator is negative.

Step 3

Exam Tip

( -4 ) से गुणा करने पर चिन्ह उलटकर (x+1>-8) बनता है। ऋणात्मक हर वाले प्रश्नों में विशेष सावधानी रखें।

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यदि \(x\in \mathbb{R}\), तो असमानता ( (x+1)2<0 ) के लिए सही कथन कौन सा है?

If \(x\in \mathbb{R}\), which statement is correct for the inequality ( (x+1)2<0 )?

Explanation opens after your attempt
Correct Answer

C. कोई वास्तविक हल नहीं हैThere is no real solution

Step 1

Concept

The square of any real number cannot be less than (0). Therefore ( (x+1)2<0 ) has no real solution.

Step 2

Why this answer is correct

The correct answer is C. कोई वास्तविक हल नहीं है / There is no real solution. The square of any real number cannot be less than (0). Therefore ( (x+1)2<0 ) has no real solution.

Step 3

Exam Tip

किसी वास्तविक संख्या का वर्ग (0) से कम नहीं हो सकता। इसलिए ( (x+1)2<0 ) का कोई वास्तविक हल नहीं है।

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कौन सा मान \(3x-7\leq 2\) का हल है लेकिन (x<0) का हल नहीं है?

Which value satisfies \(3x-7\leq 2\) but does not satisfy (x<0)?

Explanation opens after your attempt
Correct Answer

C. (x=0)

Step 1

Concept

\(3x-7\leq 2\) gives \(x\leq 3\), and (x=0) satisfies it but not (x<0). Direct option checking is a fast method.

Step 2

Why this answer is correct

The correct answer is C. (x=0). \(3x-7\leq 2\) gives \(x\leq 3\), and (x=0) satisfies it but not (x<0). Direct option checking is a fast method.

Step 3

Exam Tip

\(3x-7\leq 2\) से \(x\leq 3\) है और (x=0) इसमें आता है पर (x<0) में नहीं आता। विकल्पों को सीधे जांचना तेज तरीका है।

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एक संख्या (t) में (5) जोड़ने पर परिणाम (12) से अधिक और (20) से कम है। सही संयुक्त असमानता कौन सी है?

When (5) is added to a number (t), the result is greater than (12) and less than (20). Which compound inequality is correct?

Explanation opens after your attempt
Correct Answer

A. (12<t+5<20)

Step 1

Concept

Both greater than and less than are strict phrases, so (12<t+5<20) is correct. In word problems, first decide whether equality is included.

Step 2

Why this answer is correct

The correct answer is A. (12<t+5<20). Both greater than and less than are strict phrases, so (12<t+5<20) is correct. In word problems, first decide whether equality is included.

Step 3

Exam Tip

अधिक और कम दोनों सख्त शब्द हैं इसलिए (12<t+5<20) सही है। शब्द आधारित प्रश्नों में बराबरी शामिल है या नहीं यह पहले तय करें।

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यदि (p>q) और (r>s), तो कौन सा निष्कर्ष हमेशा सत्य है?

If (p>q) and (r>s), which conclusion is always true?

Explanation opens after your attempt
Correct Answer

A. (p+r>q+s)

Step 1

Concept

Adding inequalities in the same direction gives (p+r>q+s), which is always true. Subtraction and multiplication need extra conditions.

Step 2

Why this answer is correct

The correct answer is A. (p+r>q+s). Adding inequalities in the same direction gives (p+r>q+s), which is always true. Subtraction and multiplication need extra conditions.

Step 3

Exam Tip

दो सही दिशा वाली असमानताओं को जोड़ने पर (p+r>q+s) हमेशा सत्य है। घटाव और गुणा में अतिरिक्त शर्तें चाहिए।

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असमानता \(5-2x\leq x+11\) का हल अंतराल कौन सा है?

Which interval is the solution of \(5-2x\leq x+11\)?

Explanation opens after your attempt
Correct Answer

A. \( [-2,\infty\) )

Step 1

Concept

\(5-2x\leq x+11\) gives \(-3x\leq 6\), so \(x\geq -2\). Division by a negative coefficient reverses the sign.

Step 2

Why this answer is correct

The correct answer is A. \( [-2,\infty\) ). \(5-2x\leq x+11\) gives \(-3x\leq 6\), so \(x\geq -2\). Division by a negative coefficient reverses the sign.

Step 3

Exam Tip

\(5-2x\leq x+11\) से \(-3x\leq 6\) और \(x\geq -2\) मिलता है। ऋणात्मक गुणांक से भाग देने पर चिन्ह उलटता है।

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असमानता ( |x|<5 ) के बराबर कौन सा संयुक्त रूप है?

Which compound form is equivalent to ( |x|<5 )?

Explanation opens after your attempt
Correct Answer

B. (-5<x<5)

Step 1

Concept

( |x|<a ) means (-a<x<a) when (a>0). For less-than distance questions, the solution is the middle interval.

Step 2

Why this answer is correct

The correct answer is B. (-5<x<5). ( |x|<a ) means (-a<x<a) when (a>0). For less-than distance questions, the solution is the middle interval.

Step 3

Exam Tip

( |x|<a ) का अर्थ (-a<x<a) होता है जब (a>0) हो। कम दूरी वाले प्रश्नों में बीच का अंतराल बनता है।

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असमानता \( |x-3|\geq 2 \) का सही हल कौन सा है?

What is the correct solution of \( |x-3|\geq 2 \)?

Explanation opens after your attempt
Correct Answer

A. \(x\leq 1\) या \(x\geq 5\)\(x\leq 1\) or \(x\geq 5\)

Step 1

Concept

\( |x-3|\geq 2 \) means \(x-3\leq -2\) or \(x-3\geq 2\). Greater-distance questions give two outer intervals.

Step 2

Why this answer is correct

The correct answer is A. \(x\leq 1\) या \(x\geq 5\) / \(x\leq 1\) or \(x\geq 5\). \( |x-3|\geq 2 \) means \(x-3\leq -2\) or \(x-3\geq 2\). Greater-distance questions give two outer intervals.

Step 3

Exam Tip

\( |x-3|\geq 2 \) का अर्थ \(x-3\leq -2\) या \(x-3\geq 2\) है। अधिक दूरी वाले प्रश्नों में दो बाहरी भाग मिलते हैं।

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असमानता \( \frac{2x-1}{5}<\frac{x+4}{2} \) का हल क्या है?

What is the solution of \( \frac{2x-1}{5}<\frac{x+4}{2} \)?

Explanation opens after your attempt
Correct Answer

A. (x>-22)

Step 1

Concept

Multiplying by positive (10) gives (4x-2<5x+20), so (x>-22). With a positive common denominator, the sign does not change.

Step 2

Why this answer is correct

The correct answer is A. (x>-22). Multiplying by positive (10) gives (4x-2<5x+20), so (x>-22). With a positive common denominator, the sign does not change.

Step 3

Exam Tip

धनात्मक (10) से गुणा करने पर (4x-2<5x+20) और (x>-22) मिलता है। धनात्मक लघुत्तम हर लेने पर चिन्ह नहीं बदलता।

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कौन सा कथन असमानता \(a\leq b\) की सही व्याख्या करता है?

Which statement correctly explains the inequality \(a\leq b\)?

Explanation opens after your attempt
Correct Answer

B. (a) या तो (b) से छोटा है या (b) के बराबर है(a) is either less than (b) or equal to (b)

Step 1

Concept

\(a\leq b\) includes the possibility of equality. When the sign has a bar, include the boundary point.

Step 2

Why this answer is correct

The correct answer is B. (a) या तो (b) से छोटा है या (b) के बराबर है / (a) is either less than (b) or equal to (b). \(a\leq b\) includes the possibility of equality. When the sign has a bar, include the boundary point.

Step 3

Exam Tip

\(a\leq b\) में बराबरी की संभावना शामिल होती है। चिन्ह में रेखा हो तो सीमा बिंदु शामिल मानें।

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यदि \(x\in \mathbb{N}\) और (2x+1<12), तो सबसे बड़ा संभव (x) क्या है?

If \(x\in \mathbb{N}\) and (2x+1<12), what is the greatest possible (x)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

(2x<11) gives \(x<\frac{11}{2}\), so the greatest natural number is (x=5). For integer domains, do not write a decimal answer.

Step 2

Why this answer is correct

The correct answer is B. (5). (2x<11) gives \(x<\frac{11}{2}\), so the greatest natural number is (x=5). For integer domains, do not write a decimal answer.

Step 3

Exam Tip

(2x<11) से \(x<\frac{11}{2}\) है इसलिए प्राकृतिक संख्याओं में सबसे बड़ा (x=5) है। पूर्णांक सीमा में दशमलव उत्तर नहीं लिखते।

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असमानता (4(x-2)>3x+7) के लिए कौन सा (x) मान हल नहीं है?

For (4(x-2)>3x+7), which value of (x) is not a solution?

Explanation opens after your attempt
Correct Answer

C. (x=14)

Step 1

Concept

The solution is (4x-8>3x+7), so (x>15). (x=14) does not satisfy this condition.

Step 2

Why this answer is correct

The correct answer is C. (x=14). The solution is (4x-8>3x+7), so (x>15). (x=14) does not satisfy this condition.

Step 3

Exam Tip

हल (4x-8>3x+7) से (x>15) है। (x=14) इस शर्त को पूरा नहीं करता।

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संख्या रेखा पर ( \(-\infty,4\) ) को कैसे दिखाया जाएगा?

How is ( \(-\infty,4\) ) shown on the number line?

Explanation opens after your attempt
Correct Answer

B. (4) पर खुला बिंदु और बाईं ओर छायाOpen dot at (4) and shading left

Step 1

Concept

In ( \(-\infty,4\) ), (4) is not included and all smaller values are included. An open dot means the boundary is excluded.

Step 2

Why this answer is correct

The correct answer is B. (4) पर खुला बिंदु और बाईं ओर छाया / Open dot at (4) and shading left. In ( \(-\infty,4\) ), (4) is not included and all smaller values are included. An open dot means the boundary is excluded.

Step 3

Exam Tip

( \(-\infty,4\) ) में (4) शामिल नहीं है और सभी छोटे मान शामिल हैं। खुले बिंदु का अर्थ सीमा शामिल नहीं है।

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किस स्थिति में असमानता का चिन्ह जरूर उलटता है?

In which case must the inequality sign be reversed?

Explanation opens after your attempt
Correct Answer

C. दोनों पक्षों को (-5) से गुणा करने परMultiplying both sides by (-5)

Step 1

Concept

Multiplication or division by a negative number reverses the inequality sign. Addition and subtraction do not change the sign.

Step 2

Why this answer is correct

The correct answer is C. दोनों पक्षों को (-5) से गुणा करने पर / Multiplying both sides by (-5). Multiplication or division by a negative number reverses the inequality sign. Addition and subtraction do not change the sign.

Step 3

Exam Tip

ऋणात्मक संख्या से गुणा या भाग करने पर असमानता का चिन्ह उलटता है। जोड़ और घटाव में चिन्ह नहीं बदलता।

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असमानता \(7\leq 2x+1<15\) का हल कौन सा है?

What is the solution of \(7\leq 2x+1<15\)?

Explanation opens after your attempt
Correct Answer

A. \(3\leq x<7\)

Step 1

Concept

Subtracting (1) throughout gives \(6\leq 2x<14\), then dividing by (2) gives \(3\leq x<7\). Work on both bounds together.

Step 2

Why this answer is correct

The correct answer is A. \(3\leq x<7\). Subtracting (1) throughout gives \(6\leq 2x<14\), then dividing by (2) gives \(3\leq x<7\). Work on both bounds together.

Step 3

Exam Tip

पूरे संयुक्त असमानता से (1) घटाकर \(6\leq 2x<14\) और फिर (2) से भाग देकर \(3\leq x<7\) मिलता है। दोनों सीमाओं पर साथ काम करें।

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कौन सा विकल्प \(x\geq -1\) और (x<4) दोनों को एक साथ दर्शाता है?

Which option represents both \(x\geq -1\) and (x<4) together?

Explanation opens after your attempt
Correct Answer

A. ( [-1,4) )

Step 1

Concept

The intersection of the two conditions is ( [-1,4) ). For and type conditions, take the common part.

Step 2

Why this answer is correct

The correct answer is A. ( [-1,4) ). The intersection of the two conditions is ( [-1,4) ). For and type conditions, take the common part.

Step 3

Exam Tip

दोनों शर्तों का प्रतिच्छेद ( [-1,4) ) है। और वाले प्रश्नों में सामान्य भाग लिया जाता है।

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असमानता (3(x+2)-5\geq 2(x-1)+8) का हल क्या है?

What is the solution of (3(x+2)-5\geq 2(x-1)+8)?

Explanation opens after your attempt
Correct Answer

A. \(x\geq 5\)

Step 1

Concept

Simplifying gives \(3x+1\geq 2x+6\), so \(x\geq 5\). Expand brackets correctly first.

Step 2

Why this answer is correct

The correct answer is A. \(x\geq 5\). Simplifying gives \(3x+1\geq 2x+6\), so \(x\geq 5\). Expand brackets correctly first.

Step 3

Exam Tip

सरल करने पर \(3x+1\geq 2x+6\) और \(x\geq 5\) मिलता है। पहले कोष्ठक सही खोलें।

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यदि \(x\in \mathbb{Z}\) और \(-5\leq 2x-1<9\), तो कुल कितने पूर्णांक हल हैं?

If \(x\in \mathbb{Z}\) and \(-5\leq 2x-1<9\), how many integer solutions are there?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

\(-4\leq 2x<10\) gives \(-2\leq x<5\), so (-2,-1,0,1,2,3,4) are (7) solutions. Check endpoints separately.

Step 2

Why this answer is correct

The correct answer is C. (7). \(-4\leq 2x<10\) gives \(-2\leq x<5\), so (-2,-1,0,1,2,3,4) are (7) solutions. Check endpoints separately.

Step 3

Exam Tip

\(-4\leq 2x<10\) से \(-2\leq x<5\) है इसलिए (-2,-1,0,1,2,3,4) कुल (7) हल हैं। सीमा बिंदुओं को अलग से जांचें।

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किस असमानता का हल (x>8) है?

Which inequality has the solution (x>8)?

Explanation opens after your attempt
Correct Answer

B. (3x+1>25)

Step 1

Concept

(3x+1>25) gives (3x>24), so (x>8). Solve each option and match the required result.

Step 2

Why this answer is correct

The correct answer is B. (3x+1>25). (3x+1>25) gives (3x>24), so (x>8). Solve each option and match the required result.

Step 3

Exam Tip

(3x+1>25) से (3x>24) और (x>8) मिलता है। विकल्पों को हल करके मिलान करें।

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यदि (m<0) और (mx>m), तो (x) के लिए सही निष्कर्ष क्या है?

If (m<0) and (mx>m), what is the correct conclusion for (x)?

Explanation opens after your attempt
Correct Answer

B. (x<1)

Step 1

Concept

Since (m) is negative, division by (m) reverses the sign and gives (x<1). In parameter questions, check the sign of the coefficient first.

Step 2

Why this answer is correct

The correct answer is B. (x<1). Since (m) is negative, division by (m) reverses the sign and gives (x<1). In parameter questions, check the sign of the coefficient first.

Step 3

Exam Tip

(m) ऋणात्मक है इसलिए (m) से भाग देने पर चिन्ह उलटकर (x<1) होगा। पैरामीटर वाले प्रश्नों में गुणांक का चिन्ह पहले देखें।

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कौन सा कथन असमानता (x+3>3+x) के बारे में सही है?

Which statement is correct about the inequality (x+3>3+x)?

Explanation opens after your attempt
Correct Answer

B. किसी भी \(x\in \mathbb{R}\) के लिए सत्य नहींNot true for any \(x\in \mathbb{R}\)

Step 1

Concept

Both sides are the same (x+3), so the statement becomes (x+3>x+3), which is false. Recognize equal sides quickly.

Step 2

Why this answer is correct

The correct answer is B. किसी भी \(x\in \mathbb{R}\) के लिए सत्य नहीं / Not true for any \(x\in \mathbb{R}\). Both sides are the same (x+3), so the statement becomes (x+3>x+3), which is false. Recognize equal sides quickly.

Step 3

Exam Tip

दोनों पक्ष समान (x+3) हैं इसलिए कथन (x+3>x+3) बनता है जो असत्य है। समान पक्षों की तुलना जल्दी पहचानें।

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कौन सा कथन \(2x+5\leq 2x+9\) के लिए सही है?

Which statement is correct for \(2x+5\leq 2x+9\)?

Explanation opens after your attempt
Correct Answer

A. सभी \(x\in \mathbb{R}\) हल हैंAll \(x\in \mathbb{R}\) are solutions

Step 1

Concept

Removing (2x) gives \(5\leq 9\), which is always true. If the variable cancels, check the remaining numerical inequality.

Step 2

Why this answer is correct

The correct answer is A. सभी \(x\in \mathbb{R}\) हल हैं / All \(x\in \mathbb{R}\) are solutions. Removing (2x) gives \(5\leq 9\), which is always true. If the variable cancels, check the remaining numerical inequality.

Step 3

Exam Tip

(2x) हटाने पर \(5\leq 9\) मिलता है जो हमेशा सत्य है। चर हट जाए तो बची संख्या असमानता देखें।

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यदि (x) एक वास्तविक संख्या है, तो \(x^2+1>0\) का हल क्या है?

If (x) is a real number, what is the solution of \(x^2+1>0\)?

Explanation opens after your attempt
Correct Answer

C. सभी \(x\in \mathbb{R}\)All \(x\in \mathbb{R}\)

Step 1

Concept

Since \(x^2\geq 0\), \(x^2+1\geq 1>0\) for all real (x). Recognizing always positive forms is useful.

Step 2

Why this answer is correct

The correct answer is C. सभी \(x\in \mathbb{R}\) / All \(x\in \mathbb{R}\). Since \(x^2\geq 0\), \(x^2+1\geq 1>0\) for all real (x). Recognizing always positive forms is useful.

Step 3

Exam Tip

क्योंकि \(x^2\geq 0\), इसलिए \(x^2+1\geq 1>0\) सभी वास्तविक (x) के लिए सत्य है। धनात्मक निश्चित रूप पहचानना उपयोगी है।

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असमानता (2(x-1)<x+4<3x+10) का हल क्या है?

What is the solution of (2(x-1)<x+4<3x+10)?

Explanation opens after your attempt
Correct Answer

A. (x<6) और (x>-3)(x<6) and (x>-3)

Step 1

Concept

The first inequality gives (x<6), and the second gives (x>-3), so (-3<x<6). In a chained inequality, both conditions must hold together.

Step 2

Why this answer is correct

The correct answer is A. (x<6) और (x>-3) / (x<6) and (x>-3). The first inequality gives (x<6), and the second gives (x>-3), so (-3<x<6). In a chained inequality, both conditions must hold together.

Step 3

Exam Tip

पहली असमानता से (x<6) और दूसरी से (x>-3) मिलता है इसलिए (-3<x<6)। संयुक्त असमानता में दोनों शर्तें साथ पूरी होती हैं।

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कौन सा मान \( \frac{1}{x} > 0 \) को संतुष्ट करता है, जब \(x\neq 0\)?

Which values satisfy \( \frac{1}{x} > 0 \), when \(x\neq 0\)?

Explanation opens after your attempt
Correct Answer

A. (x>0)

Step 1

Concept

\(\frac{1}{x}\) is positive only when (x) is positive. The sign of the denominator determines the sign of the fraction.

Step 2

Why this answer is correct

The correct answer is A. (x>0). \(\frac{1}{x}\) is positive only when (x) is positive. The sign of the denominator determines the sign of the fraction.

Step 3

Exam Tip

\(\frac{1}{x}\) धनात्मक तभी है जब (x) धनात्मक हो। हर का चिन्ह पूरी भिन्न का चिन्ह तय करता है।

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कौन सा युग्म (x+y>10) को संतुष्ट करता है लेकिन (x>5) को संतुष्ट नहीं करता?

Which pair satisfies (x+y>10) but does not satisfy (x>5)?

Explanation opens after your attempt
Correct Answer

B. ( (4,8) )

Step 1

Concept

For ( (4,8) ), (x+y=12>10), but (x=4) makes (x>5) false. Check both conditions separately.

Step 2

Why this answer is correct

The correct answer is B. ( (4,8) ). For ( (4,8) ), (x+y=12>10), but (x=4) makes (x>5) false. Check both conditions separately.

Step 3

Exam Tip

( (4,8) ) में (x+y=12>10) है लेकिन (x=4) होने से (x>5) असत्य है। दो शर्तों को अलग-अलग जांचें।

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असमानता \(0.2x+1.5\leq 3.1\) का हल क्या है?

What is the solution of \(0.2x+1.5\leq 3.1\)?

Explanation opens after your attempt
Correct Answer

A. \(x\leq 8\)

Step 1

Concept

\(0.2x\leq 1.6\), so \(x\leq 8\). Decimals can also be treated as fractions while solving.

Step 2

Why this answer is correct

The correct answer is A. \(x\leq 8\). \(0.2x\leq 1.6\), so \(x\leq 8\). Decimals can also be treated as fractions while solving.

Step 3

Exam Tip

\(0.2x\leq 1.6\) और \(x\leq 8\) मिलता है। दशमलव को भिन्न मानकर भी हल किया जा सकता है।

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एक परीक्षा में उत्तीर्ण होने के लिए (40) से अधिक अंक चाहिए। यदि रोहित के अंक (m) हैं, तो सही असमानता कौन सी है?

To pass an exam, more than (40) marks are required. If Rohit's marks are (m), which inequality is correct?

Explanation opens after your attempt
Correct Answer

B. (m>40)

Step 1

Concept

More than (40) means (m>40), so (40) is not included. In word problems, identify whether the boundary is included.

Step 2

Why this answer is correct

The correct answer is B. (m>40). More than (40) means (m>40), so (40) is not included. In word problems, identify whether the boundary is included.

Step 3

Exam Tip

(40) से अधिक का अर्थ (m>40) है, (40) शामिल नहीं है। शब्दों में दिए गए प्रश्नों में सीमा शामिल है या नहीं यह पहचानें।

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एक किताब की कीमत (p) रुपये है और बजट (500) रुपये से अधिक नहीं है। सही असमानता क्या है?

A book costs (p) rupees and the budget is not more than (500) rupees. What is the correct inequality?

Explanation opens after your attempt
Correct Answer

B. \(p\leq 500\)

Step 1

Concept

Not more than means at most (500), so \(p\leq 500\). Words like at most and at least are important.

Step 2

Why this answer is correct

The correct answer is B. \(p\leq 500\). Not more than means at most (500), so \(p\leq 500\). Words like at most and at least are important.

Step 3

Exam Tip

अधिक नहीं का अर्थ अधिकतम (500) है इसलिए \(p\leq 500\)। भाषा में अधिकतम और न्यूनतम शब्द महत्वपूर्ण होते हैं।

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यदि (2a-3<7), तो (a) के लिए सही सीमा क्या है?

If (2a-3<7), what is the correct bound for (a)?

Explanation opens after your attempt
Correct Answer

A. (a<5)

Step 1

Concept

(2a<10) gives (a<5). Dividing by a positive coefficient does not change the sign.

Step 2

Why this answer is correct

The correct answer is A. (a<5). (2a<10) gives (a<5). Dividing by a positive coefficient does not change the sign.

Step 3

Exam Tip

(2a<10) से (a<5) मिलता है। धनात्मक गुणांक से भाग देने पर चिन्ह नहीं बदलता।

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कौन सा विकल्प असमानता \(6-4x\geq 2x-12\) का हल है?

Which option is the solution of \(6-4x\geq 2x-12\)?

Explanation opens after your attempt
Correct Answer

A. \(x\leq 3\)

Step 1

Concept

\(18\geq 6x\) gives \(x\leq 3\). Read the direction carefully when rearranging sides.

Step 2

Why this answer is correct

The correct answer is A. \(x\leq 3\). \(18\geq 6x\) gives \(x\leq 3\). Read the direction carefully when rearranging sides.

Step 3

Exam Tip

\(18\geq 6x\) से \(x\leq 3\) मिलता है। पक्ष बदलते समय असमानता की दिशा को सावधानी से पढ़ें।

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यदि (x>1) और (y>2), तो (x+y) के लिए कौन सा निष्कर्ष हमेशा सत्य है?

If (x>1) and (y>2), which conclusion is always true for (x+y)?

Explanation opens after your attempt
Correct Answer

A. (x+y>3)

Step 1

Concept

Adding the two inequalities gives (x+y>3). Adding inequalities in the same direction is valid.

Step 2

Why this answer is correct

The correct answer is A. (x+y>3). Adding the two inequalities gives (x+y>3). Adding inequalities in the same direction is valid.

Step 3

Exam Tip

दोनों असमानताओं को जोड़ने पर (x+y>3) मिलता है। समान दिशा वाली असमानताओं का जोड़ सुरक्षित होता है।

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कौन सा कथन \( -2< x \leq 4 \) के लिए गलत है?

Which statement is false for \( -2< x \leq 4 \)?

Explanation opens after your attempt
Correct Answer

B. (x=-2) संभव है(x=-2) is possible

Step 1

Concept

(-2) is not included because the left inequality is strict. Understanding open and closed endpoints is necessary.

Step 2

Why this answer is correct

The correct answer is B. (x=-2) संभव है / (x=-2) is possible. (-2) is not included because the left inequality is strict. Understanding open and closed endpoints is necessary.

Step 3

Exam Tip

(-2) शामिल नहीं है क्योंकि बाईं ओर सख्त असमानता है। बंद और खुले सिरों का अंतर समझना जरूरी है।

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किस असमानता का कोई वास्तविक हल नहीं है?

Which inequality has no real solution?

Explanation opens after your attempt
Correct Answer

B. \(x^2+4\leq 0\)

Step 1

Concept

\(x^2+4\) is always at least (4), so \(x^2+4\leq 0\) is impossible. Use the minimum value to judge solutions.

Step 2

Why this answer is correct

The correct answer is B. \(x^2+4\leq 0\). \(x^2+4\) is always at least (4), so \(x^2+4\leq 0\) is impossible. Use the minimum value to judge solutions.

Step 3

Exam Tip

\(x^2+4\) हमेशा कम से कम (4) होता है इसलिए \(x^2+4\leq 0\) असंभव है। न्यूनतम मान से हल का अनुमान लगाएं।

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यदि (a>b) और (b>c), तो सही निष्कर्ष कौन सा है?

If (a>b) and (b>c), which conclusion is correct?

Explanation opens after your attempt
Correct Answer

C. (a>c)

Step 1

Concept

The same-direction chain gives (a>b>c), hence (a>c). This is the transitive property of inequalities.

Step 2

Why this answer is correct

The correct answer is C. (a>c). The same-direction chain gives (a>b>c), hence (a>c). This is the transitive property of inequalities.

Step 3

Exam Tip

समान दिशा की श्रृंखला से (a>b>c) और इसलिए (a>c) मिलता है। इसे असमानताओं का संक्रमण गुण कहते हैं।

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असमानता \( -1\leq \frac{x+3}{2}<5 \) का हल क्या है?

What is the solution of \( -1\leq \frac{x+3}{2}<5 \)?

Explanation opens after your attempt
Correct Answer

A. \( -5\leq x<7 \)

Step 1

Concept

Multiplying by positive (2) gives \(-2\leq x+3<10\), then subtracting (3) gives \(-5\leq x<7\). Positive multiplication does not change direction.

Step 2

Why this answer is correct

The correct answer is A. \( -5\leq x<7 \). Multiplying by positive (2) gives \(-2\leq x+3<10\), then subtracting (3) gives \(-5\leq x<7\). Positive multiplication does not change direction.

Step 3

Exam Tip

धनात्मक (2) से गुणा करने पर \(-2\leq x+3<10\) और (3) घटाने पर \(-5\leq x<7\) मिलता है। धनात्मक गुणन में दिशा नहीं बदलती।

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यदि \(x\leq -3\), तो (2-5x) के लिए कौन सा संबंध हमेशा सत्य है?

If \(x\leq -3\), which relation is always true for (2-5x)?

Explanation opens after your attempt
Correct Answer

B. \(2-5x\geq 17\)

Step 1

Concept

Multiplying \(x\leq -3\) by (-5) gives \(-5x\geq 15\), then adding (2) gives \(2-5x\geq 17\). Negative multiplication changes direction.

Step 2

Why this answer is correct

The correct answer is B. \(2-5x\geq 17\). Multiplying \(x\leq -3\) by (-5) gives \(-5x\geq 15\), then adding (2) gives \(2-5x\geq 17\). Negative multiplication changes direction.

Step 3

Exam Tip

\(x\leq -3\) को (-5) से गुणा करने पर \(-5x\geq 15\) और (2) जोड़ने पर \(2-5x\geq 17\) है। ऋणात्मक गुणन में दिशा बदलती है।

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एक संख्या (n) का तीन गुना (18) से कम नहीं है। सही असमानता कौन सी है?

Three times a number (n) is not less than (18). Which inequality is correct?

Explanation opens after your attempt
Correct Answer

D. \(3n\geq 18\)

Step 1

Concept

Not less than means greater than or equal to, so \(3n\geq 18\). Pay attention to negative phrases while translating words into symbols.

Step 2

Why this answer is correct

The correct answer is D. \(3n\geq 18\). Not less than means greater than or equal to, so \(3n\geq 18\). Pay attention to negative phrases while translating words into symbols.

Step 3

Exam Tip

कम नहीं का अर्थ उससे बड़ा या बराबर है इसलिए \(3n\geq 18\)। वाक्य को प्रतीकों में बदलते समय नकारात्मक शब्दों पर ध्यान दें।

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यदि \(x\in \mathbb{R}\), तो ( (x-2)2\geq 0 ) के बारे में कौन सा कथन सही है?

If \(x\in \mathbb{R}\), which statement is correct about ( (x-2)2\geq 0 )?

Explanation opens after your attempt
Correct Answer

C. सभी वास्तविक (x) के लिए सत्यTrue for all real (x)

Step 1

Concept

The square of any real number is never negative, so ( (x-2)2\geq 0 ) is always true. For squared forms, check the minimum value.

Step 2

Why this answer is correct

The correct answer is C. सभी वास्तविक (x) के लिए सत्य / True for all real (x). The square of any real number is never negative, so ( (x-2)2\geq 0 ) is always true. For squared forms, check the minimum value.

Step 3

Exam Tip

किसी भी वास्तविक संख्या का वर्ग कभी ऋणात्मक नहीं होता इसलिए ( (x-2)2\geq 0 ) हमेशा सत्य है। वर्ग वाले रूपों में न्यूनतम मान देखें।

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कौन सा विकल्प \(x\leq 1\) का पूरक समुच्चय \(\mathbb{R}\) में दर्शाता है?

Which option represents the complement of \(x\leq 1\) in \(\mathbb{R}\)?

Explanation opens after your attempt
Correct Answer

C. (x>1)

Step 1

Concept

In \(\mathbb{R}\), outside \(x\leq 1\) lies only (x>1). In the complement, equality at the boundary is excluded.

Step 2

Why this answer is correct

The correct answer is C. (x>1). In \(\mathbb{R}\), outside \(x\leq 1\) lies only (x>1). In the complement, equality at the boundary is excluded.

Step 3

Exam Tip

\(\mathbb{R}\) में \(x\leq 1\) के बाहर केवल (x>1) आता है। पूरक में सीमा की बराबरी उलटकर हट जाती है।

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यदि \( \frac{x-5}{2}\leq \frac{3x+1}{4} \), तो सही हल कौन सा है?

If \( \frac{x-5}{2}\leq \frac{3x+1}{4} \), what is the correct solution?

Explanation opens after your attempt
Correct Answer

A. \(x\geq -11\)

Step 1

Concept

Multiplying by positive (4) gives \(2x-10\leq 3x+1\), so \(x\geq -11\). Track the sign carefully while moving variables.

Step 2

Why this answer is correct

The correct answer is A. \(x\geq -11\). Multiplying by positive (4) gives \(2x-10\leq 3x+1\), so \(x\geq -11\). Track the sign carefully while moving variables.

Step 3

Exam Tip

धनात्मक (4) से गुणा करने पर \(2x-10\leq 3x+1\) और \(x\geq -11\) मिलता है। चर को एक ओर ले जाते समय चिन्ह ध्यान से रखें।

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FAQs

Class 11 Mathematics Quiz FAQs

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