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Class 11 Mathematics Expert Quiz

Level 41 • 50/50 questions • 25 seconds per question.

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Time Left 20:50 25 sec/question
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Question 1 / 50 0 score
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असमानता (5x-2>3x+8) का सही हल कौन सा है?

What is the correct solution of the inequality (5x-2>3x+8)?

Explanation opens after your attempt
Correct Answer

A. (x>5)

Step 1

Concept

From (5x-2>3x+8), we get (2x>10), so (x>5). Do not change the sign while moving terms by addition or subtraction.

Step 2

Why this answer is correct

The correct answer is A. (x>5). From (5x-2>3x+8), we get (2x>10), so (x>5). Do not change the sign while moving terms by addition or subtraction.

Step 3

Exam Tip

(5x-2>3x+8) से (2x>10), इसलिए (x>5) मिलता है। चर पदों को एक ओर लाते समय चिन्ह न बदलें।

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असमानता \(7-2x\le x+1\) का हल क्या है?

What is the solution of \(7-2x\le x+1\)?

Explanation opens after your attempt
Correct Answer

A. \(x\ge 2\)

Step 1

Concept

From \(7-2x\le x+1\), we get \(6\le 3x\), so \(x\ge 2\). Apply the same operation to both sides while simplifying.

Step 2

Why this answer is correct

The correct answer is A. \(x\ge 2\). From \(7-2x\le x+1\), we get \(6\le 3x\), so \(x\ge 2\). Apply the same operation to both sides while simplifying.

Step 3

Exam Tip

\(7-2x\le x+1\) से \(6\le 3x\), इसलिए \(x\ge 2\) है। असमानता को सरल करते समय दोनों पक्षों पर समान क्रिया करें।

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असमानता \(\frac{3x}{2}-4<5\) का सही हल कौन सा है?

What is the correct solution of \(\frac{3x}{2}-4<5\)?

Explanation opens after your attempt
Correct Answer

A. (x<6)

Step 1

Concept

From \(\frac{3x}{2}<9\), we get (3x<18), so (x<6). Dividing by a positive number does not reverse the sign.

Step 2

Why this answer is correct

The correct answer is A. (x<6). From \(\frac{3x}{2}<9\), we get (3x<18), so (x<6). Dividing by a positive number does not reverse the sign.

Step 3

Exam Tip

\(\frac{3x}{2}<9\) से (3x<18), इसलिए (x<6) मिलता है। धनात्मक संख्या से भाग देने पर चिन्ह नहीं बदलता।

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असमानता \(\frac{2x-1}{3}\ge \frac{x+5}{2}\) का सही हल कौन सा है?

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

Explanation opens after your attempt
Correct Answer

A. \(x\ge 17\)

Step 1

Concept

Multiplying by positive (6) gives (2(2x-1)\ge 3(x+5)), hence \(x\ge 17\). A positive multiplier used to clear denominators does not change the sign.

Step 2

Why this answer is correct

The correct answer is A. \(x\ge 17\). Multiplying by positive (6) gives (2(2x-1)\ge 3(x+5)), hence \(x\ge 17\). A positive multiplier used to clear denominators does not change the sign.

Step 3

Exam Tip

धनात्मक (6) से गुणा करने पर (2(2x-1)\ge 3(x+5)), इसलिए \(x\ge 17\) है। हर हटाते समय धनात्मक गुणक चिन्ह नहीं बदलता।

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संयुक्त असमानता \(-4\le 2x+6<10\) का हल कौन सा है?

What is the solution of the compound inequality \(-4\le 2x+6<10\)?

Explanation opens after your attempt
Correct Answer

A. \(-5\le x<2\)

Step 1

Concept

Subtracting (6) gives \(-10\le 2x<4\), then dividing by (2) gives \(-5\le x<2\). Check equality at each endpoint separately.

Step 2

Why this answer is correct

The correct answer is A. \(-5\le x<2\). Subtracting (6) gives \(-10\le 2x<4\), then dividing by (2) gives \(-5\le x<2\). Check equality at each endpoint separately.

Step 3

Exam Tip

पहले (6) घटाने पर \(-10\le 2x<4\) और फिर (2) से भाग देने पर \(-5\le x<2\) मिलता है। दोनों सिरों की बराबरी अलग-अलग देखें।

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यदि \(x\in[-3,2\)) है, तो (4-2x) किस अंतराल में होगा?

If \(x\in[-3,2\)), in which interval will (4-2x) lie?

Explanation opens after your attempt
Correct Answer

A. ((0,10])

Step 1

Concept

Multiplying by (-2) reverses the order, and then (4) is added. Therefore (4-2x\in(0,10]).

Step 2

Why this answer is correct

The correct answer is A. ((0,10]). Multiplying by (-2) reverses the order, and then (4) is added. Therefore (4-2x\in(0,10]).

Step 3

Exam Tip

(-2) से गुणा करने पर क्रम उलटता है और फिर (4) जोड़ते हैं। इसलिए (4-2x\in(0,10]) होगा।

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यदि (a<b) और (c>d) है, तो कौन सा निष्कर्ष निश्चित रूप से नहीं निकाला जा सकता?

If (a<b) and (c>d), which conclusion cannot be drawn with certainty?

Explanation opens after your attempt
Correct Answer

A. (a+c<b+d)

Step 1

Concept

Inequalities in opposite directions do not give a fixed comparison between (a+c) and (b+d). Same direction is the safe rule for adding inequalities.

Step 2

Why this answer is correct

The correct answer is A. (a+c<b+d). Inequalities in opposite directions do not give a fixed comparison between (a+c) and (b+d). Same direction is the safe rule for adding inequalities.

Step 3

Exam Tip

विपरीत दिशा की असमानताओं को जोड़कर (a+c) और (b+d) की निश्चित तुलना नहीं मिलती। जोड़ने के लिए दिशा समान होना सुरक्षित नियम है।

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कौन सा कथन \(x\in(-\infty,4)\) के बराबर है?

Which statement is equivalent to \(x\in\(-\infty,4\),)?

Explanation opens after your attempt
Correct Answer

A. \(x\le 4\)

Step 1

Concept

The interval \((-\infty,4)\) includes (4) and all smaller values. Hence it is \(x\le 4\).

Step 2

Why this answer is correct

The correct answer is A. \(x\le 4\). The interval \((-\infty,4)\) includes (4) and all smaller values. Hence it is \(x\le 4\).

Step 3

Exam Tip

अंतराल \((-\infty,4)\) में (4) शामिल है और उससे छोटे सभी मान आते हैं। इसलिए यह \(x\le 4\) है।

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समुच्चय \({x\in\mathbb{R}: -1<x<3}\) का सही अंतराल रूप कौन सा है?

Which interval form represents \({x\in\mathbb{R}: -1<x<3}\)?

Explanation opens after your attempt
Correct Answer

A. ((-1,3))

Step 1

Concept

Both inequalities are strict, so both endpoints use open parentheses. The values (-1) and (3) are not included.

Step 2

Why this answer is correct

The correct answer is A. ((-1,3)). Both inequalities are strict, so both endpoints use open parentheses. The values (-1) and (3) are not included.

Step 3

Exam Tip

दोनों असमानताएं कठोर हैं, इसलिए दोनों सिरों पर खुला कोष्ठक लगेगा। (-1) और (3) शामिल नहीं हैं।

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यदि \(x\in\mathbb{Z}\) और \(-4\le x\le 4\) है, तो (x) के कितने मान संभव हैं?

If \(x\in\mathbb{Z}\) and \(-4\le x\le 4\), how many values of (x) are possible?

Explanation opens after your attempt
Correct Answer

A. (9)

Step 1

Concept

The integers from (-4) to (4) are included with both endpoints. The total number of values is (9).

Step 2

Why this answer is correct

The correct answer is A. (9). The integers from (-4) to (4) are included with both endpoints. The total number of values is (9).

Step 3

Exam Tip

पूर्णांक (-4) से (4) तक दोनों सिरों सहित आते हैं। कुल मान (9) हैं।

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यदि \(x\in\mathbb{N}\) और (2<x<8) है, जहां \(\mathbb{N}={1,2,3,\ldots}\), तो हल समुच्चय कौन सा है?

If \(x\in\mathbb{N}\) and (2<x<8), where \(\mathbb{N}={1,2,3,\ldots}\), what is the solution set?

Explanation opens after your attempt
Correct Answer

A. \(x\in{3,4,5,6,7}\)

Step 1

Concept

The values (2) and (8) are excluded, so the natural values are from (3) to (7). Pay close attention to strict signs.

Step 2

Why this answer is correct

The correct answer is A. \(x\in{3,4,5,6,7}\). The values (2) and (8) are excluded, so the natural values are from (3) to (7). Pay close attention to strict signs.

Step 3

Exam Tip

(2) और (8) शामिल नहीं हैं, इसलिए प्राकृतिक मान (3) से (7) तक मिलते हैं। कठोर चिन्हों पर खास ध्यान दें।

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कथन \(x\le -3\) का निषेध कौन सा है?

Which is the negation of the statement \(x\le -3\)?

Explanation opens after your attempt
Correct Answer

A. (x>-3)

Step 1

Concept

All values outside \(x\le -3\) satisfy (x>-3). In negation, the equality case shifts to the opposite side.

Step 2

Why this answer is correct

The correct answer is A. (x>-3). All values outside \(x\le -3\) satisfy (x>-3). In negation, the equality case shifts to the opposite side.

Step 3

Exam Tip

\(x\le -3\) के बाहर सभी मान (x>-3) हैं। निषेध में बराबरी की स्थिति उलट जाती है।

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यदि \(p\ge q\) और (q>r) है, तो कौन सा निष्कर्ष निश्चित है?

If \(p\ge q\) and (q>r), which conclusion is certain?

Explanation opens after your attempt
Correct Answer

A. (p>r)

Step 1

Concept

The chain \(p\ge q>r\) gives (p>r). One strict link makes the final conclusion strict.

Step 2

Why this answer is correct

The correct answer is A. (p>r). The chain \(p\ge q>r\) gives (p>r). One strict link makes the final conclusion strict.

Step 3

Exam Tip

श्रृंखला \(p\ge q>r\) से (p>r) मिलता है। एक कठोर कड़ी अंतिम निष्कर्ष को कठोर बना देती है।

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यदि \(a\le b\) और \(k\ge 0\) है, तो कौन सा निष्कर्ष हमेशा सही है?

If \(a\le b\) and \(k\ge 0\), which conclusion is always correct?

Explanation opens after your attempt
Correct Answer

A. \(ka\le kb\)

Step 1

Concept

If (k>0), the direction stays the same, and if (k=0), equality occurs. Hence \(ka\le kb\) is always correct.

Step 2

Why this answer is correct

The correct answer is A. \(ka\le kb\). If (k>0), the direction stays the same, and if (k=0), equality occurs. Hence \(ka\le kb\) is always correct.

Step 3

Exam Tip

यदि (k>0) हो तो दिशा वही रहती है और यदि (k=0) हो तो बराबरी होती है। इसलिए \(ka\le kb\) हमेशा सही है।

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यदि (x>0) और \(x+\frac{1}{x}\ge 2\) है, तो समानता कब होगी?

If (x>0) and \(x+\frac{1}{x}\ge 2\), when does equality occur?

Explanation opens after your attempt
Correct Answer

A. (x=1)

Step 1

Concept

For positive (x), equality in \(x+\frac{1}{x}\ge 2\) occurs at (x=1). Remember the equality condition in standard forms.

Step 2

Why this answer is correct

The correct answer is A. (x=1). For positive (x), equality in \(x+\frac{1}{x}\ge 2\) occurs at (x=1). Remember the equality condition in standard forms.

Step 3

Exam Tip

धनात्मक (x) के लिए \(x+\frac{1}{x}\ge 2\) में समानता (x=1) पर होती है। ऐसे मानक रूपों में समानता की शर्त याद रखें।

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असमानता (|x-2|<5) का हल कौन सा है?

What is the solution of (|x-2|<5)?

Explanation opens after your attempt
Correct Answer

A. (-3<x<7)

Step 1

Concept

The inequality (|x-2|<5) means (-5<x-2<5), so (-3<x<7). A less-than distance inequality gives the middle interval.

Step 2

Why this answer is correct

The correct answer is A. (-3<x<7). The inequality (|x-2|<5) means (-5<x-2<5), so (-3<x<7). A less-than distance inequality gives the middle interval.

Step 3

Exam Tip

(|x-2|<5) का अर्थ है (-5<x-2<5), इसलिए (-3<x<7)। कम से कम दूरी वाले प्रश्न में बीच का अंतराल आता है।

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असमानता \(|x+1|\ge 4\) का सही हल कौन सा है?

What is the correct solution of \(|x+1|\ge 4\)?

Explanation opens after your attempt
Correct Answer

A. \(x\le -5\) या \(x\ge 3\)\(x\le -5\) or \(x\ge 3\)

Step 1

Concept

For \(|x+1|\ge 4\), we have \(x+1\le -4\) or \(x+1\ge 4\). Thus \(x\le -5\) or \(x\ge 3\).

Step 2

Why this answer is correct

The correct answer is A. \(x\le -5\) या \(x\ge 3\) / \(x\le -5\) or \(x\ge 3\). For \(|x+1|\ge 4\), we have \(x+1\le -4\) or \(x+1\ge 4\). Thus \(x\le -5\) or \(x\ge 3\).

Step 3

Exam Tip

\(|x+1|\ge 4\) में \(x+1\le -4\) या \(x+1\ge 4\) होता है। इसलिए \(x\le -5\) या \(x\ge 3\) मिलता है।

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कौन सा कथन \(x^2<9\) के हल को सही बताता है?

Which statement correctly gives the solution of \(x^2<9\)?

Explanation opens after your attempt
Correct Answer

A. (-3<x<3)

Step 1

Concept

The inequality \(x^2<9\) means (|x|<3), so (-3<x<3). In square inequalities, check both directions.

Step 2

Why this answer is correct

The correct answer is A. (-3<x<3). The inequality \(x^2<9\) means (|x|<3), so (-3<x<3). In square inequalities, check both directions.

Step 3

Exam Tip

\(x^2<9\) का अर्थ (|x|<3) है, इसलिए (-3<x<3)। वर्ग वाली असमानता में दोनों दिशाएं जांचें।

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कौन सा कथन \(x^2\ge 16\) का सही हल है?

Which statement is the correct solution of \(x^2\ge 16\)?

Explanation opens after your attempt
Correct Answer

A. \(x\le -4\) या \(x\ge 4\)\(x\le -4\) or \(x\ge 4\)

Step 1

Concept

The inequality \(x^2\ge 16\) means \(|x|\ge 4\). Hence (x) lies outside: \(x\le -4\) or \(x\ge 4\).

Step 2

Why this answer is correct

The correct answer is A. \(x\le -4\) या \(x\ge 4\) / \(x\le -4\) or \(x\ge 4\). The inequality \(x^2\ge 16\) means \(|x|\ge 4\). Hence (x) lies outside: \(x\le -4\) or \(x\ge 4\).

Step 3

Exam Tip

\(x^2\ge 16\) का अर्थ \(|x|\ge 4\) है। इसलिए (x) बाहर की ओर \(x\le -4\) या \(x\ge 4\) होगा।

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यदि (x>4) है, तो (x-4) और \(\frac{1}{x-4}\) के चिन्ह के बारे में सही कथन कौन सा है?

If (x>4), which statement about the signs of (x-4) and \(\frac{1}{x-4}\) is correct?

Explanation opens after your attempt
Correct Answer

A. दोनों धनात्मक हैंboth are positive

Step 1

Concept

From (x>4), (x-4>0), so its reciprocal is also positive. The reciprocal keeps the same sign as the original quantity.

Step 2

Why this answer is correct

The correct answer is A. दोनों धनात्मक हैं / both are positive. From (x>4), (x-4>0), so its reciprocal is also positive. The reciprocal keeps the same sign as the original quantity.

Step 3

Exam Tip

(x>4) से (x-4>0), इसलिए उसका व्युत्क्रम भी धनात्मक होगा। व्युत्क्रम का चिन्ह मूल राशि जैसा ही रहता है।

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कौन सा कथन \(x^2+4\ge 4\) के बारे में सही है?

Which statement about \(x^2+4\ge 4\) is correct?

Explanation opens after your attempt
Correct Answer

A. यह सभी \(x\in\mathbb{R}\) के लिए सत्य हैit is true for all \(x\in\mathbb{R}\)

Step 1

Concept

Since \(x^2\ge 0\), \(x^2+4\ge 4\) is always true. Identify the minimum value of the square term.

Step 2

Why this answer is correct

The correct answer is A. यह सभी \(x\in\mathbb{R}\) के लिए सत्य है / it is true for all \(x\in\mathbb{R}\). Since \(x^2\ge 0\), \(x^2+4\ge 4\) is always true. Identify the minimum value of the square term.

Step 3

Exam Tip

क्योंकि \(x^2\ge 0\), इसलिए \(x^2+4\ge 4\) हमेशा सत्य है। वर्ग वाले पद का न्यूनतम मान पहचानें।

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कौन सा कथन \(x^2+2<0\) के लिए सही है?

Which statement is correct for \(x^2+2<0\)?

Explanation opens after your attempt
Correct Answer

A. कोई वास्तविक हल नहींno real solution

Step 1

Concept

For every real (x), \(x^2\ge 0\), so \(x^2+2\ge 2\). It can never be less than (0).

Step 2

Why this answer is correct

The correct answer is A. कोई वास्तविक हल नहीं / no real solution. For every real (x), \(x^2\ge 0\), so \(x^2+2\ge 2\). It can never be less than (0).

Step 3

Exam Tip

हर वास्तविक (x) के लिए \(x^2\ge 0\), इसलिए \(x^2+2\ge 2\) होगा। यह कभी (0) से छोटा नहीं हो सकता।

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यदि (x+y>10) और (y=4) है, तो (x) के लिए कौन सा कथन सही है?

If (x+y>10) and (y=4), which statement about (x) is correct?

Explanation opens after your attempt
Correct Answer

A. (x>6)

Step 1

Concept

Substituting (y=4) gives (x+4>10), so (x>6). After substituting a known value, solve the simple inequality.

Step 2

Why this answer is correct

The correct answer is A. (x>6). Substituting (y=4) gives (x+4>10), so (x>6). After substituting a known value, solve the simple inequality.

Step 3

Exam Tip

(y=4) रखने पर (x+4>10), इसलिए (x>6) मिलता है। ज्ञात मान को रखने के बाद साधारण असमानता हल करें।

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एक संख्या का (3) गुना (17) से कम है। सही असमानता कौन सी है?

Three times a number is less than (17). Which inequality is correct?

Explanation opens after your attempt
Correct Answer

A. (3x<17)

Step 1

Concept

Let the number be (x); three times it is (3x), and less than (17) means (<17). Watch the order while translating words to symbols.

Step 2

Why this answer is correct

The correct answer is A. (3x<17). Let the number be (x); three times it is (3x), and less than (17) means (<17). Watch the order while translating words to symbols.

Step 3

Exam Tip

संख्या को (x) मानने पर उसका (3) गुना (3x) होगा और (17) से कम का अर्थ (<17) है। भाषा को प्रतीक में बदलते समय क्रम पर ध्यान दें।

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किसी संख्या में (5) जोड़ने पर परिणाम कम से कम (12) है। सही असमानता कौन सी है?

When (5) is added to a number, the result is at least (12). Which inequality is correct?

Explanation opens after your attempt
Correct Answer

A. \(x+5\ge 12\)

Step 1

Concept

At least means \(\ge\). Therefore the mathematical form of the statement is \(x+5\ge 12\).

Step 2

Why this answer is correct

The correct answer is A. \(x+5\ge 12\). At least means \(\ge\). Therefore the mathematical form of the statement is \(x+5\ge 12\).

Step 3

Exam Tip

कम से कम का अर्थ \(\ge\) होता है। इसलिए कथन का गणितीय रूप \(x+5\ge 12\) है।

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यदि (2x-1) अधिकतम (9) है, तो (x) के लिए सही हल कौन सा है?

If (2x-1) is at most (9), what is the correct solution for (x)?

Explanation opens after your attempt
Correct Answer

A. \(x\le 5\)

Step 1

Concept

At most (9) means \(2x-1\le 9\). This gives \(2x\le 10\), hence \(x\le 5\).

Step 2

Why this answer is correct

The correct answer is A. \(x\le 5\). At most (9) means \(2x-1\le 9\). This gives \(2x\le 10\), hence \(x\le 5\).

Step 3

Exam Tip

अधिकतम (9) का अर्थ \(2x-1\le 9\) है। इससे \(2x\le 10\), इसलिए \(x\le 5\) मिलता है।

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कौन सा मान असमानता (2x+3<11) को संतुष्ट नहीं करता?

Which value does not satisfy the inequality (2x+3<11)?

Explanation opens after your attempt
Correct Answer

A. (x=4)

Step 1

Concept

The inequality gives (2x<8), so (x<4). Substituting (x=4) gives (11<11), which is false.

Step 2

Why this answer is correct

The correct answer is A. (x=4). The inequality gives (2x<8), so (x<4). Substituting (x=4) gives (11<11), which is false.

Step 3

Exam Tip

असमानता से (2x<8), इसलिए (x<4) है। (x=4) रखने पर (11<11) गलत होता है।

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कौन सा मान असमानता \(-x+6\ge 2\) को संतुष्ट करता है?

Which value satisfies the inequality \(-x+6\ge 2\)?

Explanation opens after your attempt
Correct Answer

A. (x=4)

Step 1

Concept

From \(-x+6\ge 2\), we get \(-x\ge -4\), so \(x\le 4\). Among the options, only (x=4) is correct.

Step 2

Why this answer is correct

The correct answer is A. (x=4). From \(-x+6\ge 2\), we get \(-x\ge -4\), so \(x\le 4\). Among the options, only (x=4) is correct.

Step 3

Exam Tip

\(-x+6\ge 2\) से \(-x\ge -4\), इसलिए \(x\le 4\) मिलता है। दिए विकल्पों में (x=4) ही सही है।

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असमानता (4x+1<4x+9) का हल कौन सा है?

What is the solution of (4x+1<4x+9)?

Explanation opens after your attempt
Correct Answer

A. सभी \(x\in\mathbb{R}\)all \(x\in\mathbb{R}\)

Step 1

Concept

Subtracting (4x) from both sides gives (1<9), which is always true. When the variable cancels, decide the solution from the truth of the remaining statement.

Step 2

Why this answer is correct

The correct answer is A. सभी \(x\in\mathbb{R}\) / all \(x\in\mathbb{R}\). Subtracting (4x) from both sides gives (1<9), which is always true. When the variable cancels, decide the solution from the truth of the remaining statement.

Step 3

Exam Tip

दोनों पक्षों से (4x) घटाने पर (1<9) मिलता है, जो हमेशा सत्य है। चर हटने पर शेष कथन की सत्यता से हल तय करें।

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असमानता (6x-2>6x+1) का हल कौन सा है?

What is the solution of (6x-2>6x+1)?

Explanation opens after your attempt
Correct Answer

A. कोई \(x\in\mathbb{R}\) नहींno \(x\in\mathbb{R}\)

Step 1

Concept

Subtracting (6x) from both sides gives (-2>1), which is false. A false constant statement has no solution.

Step 2

Why this answer is correct

The correct answer is A. कोई \(x\in\mathbb{R}\) नहीं / no \(x\in\mathbb{R}\). Subtracting (6x) from both sides gives (-2>1), which is false. A false constant statement has no solution.

Step 3

Exam Tip

दोनों पक्षों से (6x) घटाने पर (-2>1) मिलता है, जो असत्य है। असत्य स्थिर कथन का कोई हल नहीं होता।

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यदि \(x\in(2,5]\) और \(y=x-2\) है, तो (y) किस अंतराल में होगा?

If \(x\in(2,5]\) and \(y=x-2\), in which interval will (y) lie?

Explanation opens after your attempt
Correct Answer

A. (y\in(0,3])

Step 1

Concept

Subtracting (2) from the whole interval subtracts (2) from the endpoints. The open (2) becomes open (0), and (5) remains closed.

Step 2

Why this answer is correct

The correct answer is A. (y\in(0,3]). Subtracting (2) from the whole interval subtracts (2) from the endpoints. The open (2) becomes open (0), and (5) remains closed.

Step 3

Exam Tip

पूरे अंतराल से (2) घटाने पर सिरों से भी (2) घटता है। खुला (2) अब खुला (0) बनता है और (5) बंद रहता है।

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यदि \(x\in[-1,3]\) और (y=2x+4) है, तो (y) किस अंतराल में होगा?

If \(x\in[-1,3]\) and (y=2x+4), in which interval will (y) lie?

Explanation opens after your attempt
Correct Answer

A. \(y\in[2,10]\)

Step 1

Concept

The expression (2x+4) is increasing, so the endpoint values are (2) and (10). Closed endpoints give a closed interval.

Step 2

Why this answer is correct

The correct answer is A. \(y\in[2,10]\). The expression (2x+4) is increasing, so the endpoint values are (2) and (10). Closed endpoints give a closed interval.

Step 3

Exam Tip

(2x+4) बढ़ने वाला रैखिक रूप है, इसलिए सिरों पर मान (2) और (10) मिलते हैं। बंद सिरों से बंद अंतराल मिलता है।

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यदि \(x\in(0,2)\) है, तो \(x^2\) किस अंतराल में होगा?

If \(x\in(0,2)\), in which interval will \(x^2\) lie?

Explanation opens after your attempt
Correct Answer

A. \(x^2\in(0,4)\)

Step 1

Concept

On the positive interval ((0,2)), the square function is increasing. Hence \(0<x^2<4\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2\in(0,4)\). On the positive interval ((0,2)), the square function is increasing. Hence \(0<x^2<4\).

Step 3

Exam Tip

धनात्मक अंतराल ((0,2)) में वर्ग फलन बढ़ता है। इसलिए \(0<x^2<4\) होगा।

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यदि (-3<x<-1) है, तो \(x^2\) के लिए कौन सा कथन सही है?

If (-3<x<-1), which statement about \(x^2\) is correct?

Explanation opens after your attempt
Correct Answer

A. \(1<x^2<9\)

Step 1

Concept

On this interval, (|x|) lies between (1) and (3), so \(1<x^2<9\). For squares on negative intervals, look at magnitude.

Step 2

Why this answer is correct

The correct answer is A. \(1<x^2<9\). On this interval, (|x|) lies between (1) and (3), so \(1<x^2<9\). For squares on negative intervals, look at magnitude.

Step 3

Exam Tip

इस अंतराल में (|x|) (1) और (3) के बीच है, इसलिए \(1<x^2<9\)। ऋणात्मक अंतराल में वर्ग के लिए परिमाण देखें।

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कौन सा कथन \(0\le x<1\) से निश्चित रूप से मिलता है?

Which statement definitely follows from \(0\le x<1\)?

Explanation opens after your attempt
Correct Answer

A. \(x^2\le x\)

Step 1

Concept

For \(0\le x<1\), squaring does not increase the number, so \(x^2\le x\). Equality occurs at (x=0).

Step 2

Why this answer is correct

The correct answer is A. \(x^2\le x\). For \(0\le x<1\), squaring does not increase the number, so \(x^2\le x\). Equality occurs at (x=0).

Step 3

Exam Tip

\(0\le x<1\) में वर्ग करने पर संख्या बढ़ती नहीं है, इसलिए \(x^2\le x\)। (x=0) पर बराबरी होती है।

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यदि (x>1) है, तो \(x^3\) के लिए कौन सा कथन सही है?

If (x>1), which statement about \(x^3\) is correct?

Explanation opens after your attempt
Correct Answer

A. \(x^3>1\)

Step 1

Concept

When (x>1), (x), \(x^2\), and \(x^3\) are all greater than (1). Powers preserve the order for positive values above (1).

Step 2

Why this answer is correct

The correct answer is A. \(x^3>1\). When (x>1), (x), \(x^2\), and \(x^3\) are all greater than (1). Powers preserve the order for positive values above (1).

Step 3

Exam Tip

(x>1) होने पर (x), \(x^2\) और \(x^3\) सभी (1) से बड़े हैं। धनात्मक बड़े मानों में घात क्रम बनाए रखती है।

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किस विकल्प में असमानता का चिन्ह गलत बदला गया है?

In which option has the inequality sign been changed incorrectly?

Explanation opens after your attempt
Correct Answer

A. \(a<b\Rightarrow -2a<-2b\)

Step 1

Concept

Multiplying by (-2) should reverse the sign, so the correct form is (-2a>-2b). This is the biggest error in negative multiplication.

Step 2

Why this answer is correct

The correct answer is A. \(a<b\Rightarrow -2a<-2b\). Multiplying by (-2) should reverse the sign, so the correct form is (-2a>-2b). This is the biggest error in negative multiplication.

Step 3

Exam Tip

(-2) से गुणा करने पर चिन्ह उलटना चाहिए, इसलिए सही रूप (-2a>-2b) है। ऋणात्मक गुणन में यही सबसे बड़ी गलती होती है।

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असमानता \(2(3x-4)-5\ge 4x+1\) का सही हल कौन सा है?

What is the correct solution of \(2(3x-4)-5\ge 4x+1\)?

Explanation opens after your attempt
Correct Answer

A. \(x\ge 7\)

Step 1

Concept

Simplifying gives \(6x-13\ge 4x+1\), so \(2x\ge 14\) and \(x\ge 7\). While expanding brackets, multiply every term.

Step 2

Why this answer is correct

The correct answer is A. \(x\ge 7\). Simplifying gives \(6x-13\ge 4x+1\), so \(2x\ge 14\) and \(x\ge 7\). While expanding brackets, multiply every term.

Step 3

Exam Tip

सरल करने पर \(6x-13\ge 4x+1\), इसलिए \(2x\ge 14\) और \(x\ge 7\) मिलता है। कोष्ठक खोलते समय हर पद पर गुणा करें।

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असमानता \(\frac{x+2}{4}<\frac{3x-1}{6}\) का सही हल कौन सा है?

What is the correct solution of \(\frac{x+2}{4}<\frac{3x-1}{6}\)?

Explanation opens after your attempt
Correct Answer

A. \(x>\frac{8}{3}\)

Step 1

Concept

Multiplying by positive (12) gives (3x+6<6x-2), so \(x>\frac{8}{3}\). A positive LCM does not reverse the sign.

Step 2

Why this answer is correct

The correct answer is A. \(x>\frac{8}{3}\). Multiplying by positive (12) gives (3x+6<6x-2), so \(x>\frac{8}{3}\). A positive LCM does not reverse the sign.

Step 3

Exam Tip

धनात्मक (12) से गुणा करने पर (3x+6<6x-2), इसलिए \(x>\frac{8}{3}\) है। धनात्मक लघुत्तम समापवर्त्य से चिन्ह नहीं बदलता।

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यदि \(x\in(-2,5]\) और \(y=\frac{3-x}{2}\) है, तो (y) किस अंतराल में होगा?

If \(x\in(-2,5]\) and \(y=\frac{3-x}{2}\), in which interval will (y) lie?

Explanation opens after your attempt
Correct Answer

A. \(y\in[-1,\frac{5}{2}\))

Step 1

Concept

The linear expression \(\frac{3-x}{2}\) is decreasing, so the endpoint order reverses. At (x=5), (y=-1) is included, and since (x=-2) is excluded, \(\frac{5}{2}\) is excluded.

Step 2

Why this answer is correct

The correct answer is A. \(y\in[-1,\frac{5}{2}\)). The linear expression \(\frac{3-x}{2}\) is decreasing, so the endpoint order reverses. At (x=5), (y=-1) is included, and since (x=-2) is excluded, \(\frac{5}{2}\) is excluded.

Step 3

Exam Tip

रैखिक रूप \(\frac{3-x}{2}\) घटता है, इसलिए सिरों का क्रम उलटता है। (x=5) पर (y=-1) शामिल है और (x=-2) शामिल नहीं है, इसलिए \(\frac{5}{2}\) शामिल नहीं होगा।

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यदि \(x\in\mathbb{Z}\) और (-7<x<2) है, तो (x) के कितने पूर्णांक मान हैं?

If \(x\in\mathbb{Z}\) and (-7<x<2), how many integer values of (x) are there?

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

The integers are (-6,-5,-4,-3,-2,-1,0,1). Both endpoints are open, so (-7) and (2) are not included.

Step 2

Why this answer is correct

The correct answer is A. (8). The integers are (-6,-5,-4,-3,-2,-1,0,1). Both endpoints are open, so (-7) and (2) are not included.

Step 3

Exam Tip

पूर्णांक (-6,-5,-4,-3,-2,-1,0,1) हैं। दोनों सिरे खुले हैं, इसलिए (-7) और (2) शामिल नहीं हैं।

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किसी संख्या के दुगुने में (9) घटाने पर परिणाम (15) से अधिक है। सही हल कौन सा है?

When (9) is subtracted from twice a number, the result is greater than (15). What is the correct solution?

Explanation opens after your attempt
Correct Answer

A. (x>12)

Step 1

Concept

The sentence gives (2x-9>15). This gives (2x>24), so (x>12).

Step 2

Why this answer is correct

The correct answer is A. (x>12). The sentence gives (2x-9>15). This gives (2x>24), so (x>12).

Step 3

Exam Tip

वाक्य से (2x-9>15) बनता है। इससे (2x>24), इसलिए (x>12) मिलता है।

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कौन सा मान असमानता \(\frac{x}{3}+2\le 5\) को संतुष्ट नहीं करता?

Which value does not satisfy the inequality \(\frac{x}{3}+2\le 5\)?

Explanation opens after your attempt
Correct Answer

A. (x=10)

Step 1

Concept

The inequality gives \(\frac{x}{3}\le 3\), so \(x\le 9\). The value (x=10) is outside this bound.

Step 2

Why this answer is correct

The correct answer is A. (x=10). The inequality gives \(\frac{x}{3}\le 3\), so \(x\le 9\). The value (x=10) is outside this bound.

Step 3

Exam Tip

असमानता से \(\frac{x}{3}\le 3\), इसलिए \(x\le 9\) है। (x=10) इस सीमा से बाहर है।

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यदि (u<v) और (r<s) है, तो कौन सा कथन हमेशा सही है?

If (u<v) and (r<s), which statement is always correct?

Explanation opens after your attempt
Correct Answer

A. (u+r<v+s)

Step 1

Concept

Adding inequalities in the same direction gives (u+r<v+s). Subtraction, multiplication, and division need extra sign conditions.

Step 2

Why this answer is correct

The correct answer is A. (u+r<v+s). Adding inequalities in the same direction gives (u+r<v+s). Subtraction, multiplication, and division need extra sign conditions.

Step 3

Exam Tip

एक ही दिशा की असमानताओं को जोड़ने से (u+r<v+s) मिलता है। घटाव, गुणा और भाग के लिए अतिरिक्त चिन्ह शर्तें चाहिए।

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कौन सा कथन \(3\le x<7\) और (x<5) दोनों को संतुष्ट करता है?

Which statement satisfies both \(3\le x<7\) and (x<5)?

Explanation opens after your attempt
Correct Answer

A. \(3\le x<5\)

Step 1

Concept

The common part of both conditions starts at (3) and goes up to before (5). The value (3) is included and (5) is excluded.

Step 2

Why this answer is correct

The correct answer is A. \(3\le x<5\). The common part of both conditions starts at (3) and goes up to before (5). The value (3) is included and (5) is excluded.

Step 3

Exam Tip

दोनों शर्तों का साझा भाग (3) से शुरू होकर (5) से पहले तक है। (3) शामिल है और (5) शामिल नहीं है।

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असमानता (-3(2x-1)>12) का सही हल कौन सा है?

What is the correct solution of (-3(2x-1)>12)?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

From (-6x+3>12), we get (-6x>9), and dividing by (-6) gives \(x<-\frac{3}{2}\). Division by a negative reverses the sign.

Step 2

Why this answer is correct

The correct answer is A. \(x<-\frac{3}{2}\). From (-6x+3>12), we get (-6x>9), and dividing by (-6) gives \(x<-\frac{3}{2}\). Division by a negative reverses the sign.

Step 3

Exam Tip

(-6x+3>12) से (-6x>9), फिर (-6) से भाग देने पर \(x<-\frac{3}{2}\) मिलता है। ऋणात्मक भाग में चिन्ह उलटता है।

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अभिकथन: यदि (0<a<b), तो (b-a>0)। कारण: बड़ी धनात्मक संख्या में से छोटी धनात्मक संख्या घटाने पर धनात्मक अंतर मिलता है। सही विकल्प चुनिए।

Assertion: If (0<a<b), then (b-a>0). Reason: Subtracting a smaller positive number from a larger positive number gives a positive difference. Choose the correct option.

Explanation opens after your attempt
Correct Answer

A. अभिकथन और कारण दोनों सही हैं, और कारण सही व्याख्या हैboth assertion and reason are true, and the reason explains it

Step 1

Concept

From (a<b), we directly get (b-a>0). The reason correctly explains this difference.

Step 2

Why this answer is correct

The correct answer is A. अभिकथन और कारण दोनों सही हैं, और कारण सही व्याख्या है / both assertion and reason are true, and the reason explains it. From (a<b), we directly get (b-a>0). The reason correctly explains this difference.

Step 3

Exam Tip

(a<b) से (b-a>0) सीधे मिलता है। कारण इसी अंतर की सही व्याख्या करता है।

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यदि \(x\in[1,4\)) और (y=5-3x) है, तो (y) किस अंतराल में होगा?

If \(x\in[1,4\)) and (y=5-3x), in which interval will (y) lie?

Explanation opens after your attempt
Correct Answer

A. (y\in(-7,2])

Step 1

Concept

The linear expression (5-3x) is decreasing, so the order of endpoints reverses. Since (x=1) is included, (2) is included, and since (x=4) is excluded, (-7) is excluded.

Step 2

Why this answer is correct

The correct answer is A. (y\in(-7,2]). The linear expression (5-3x) is decreasing, so the order of endpoints reverses. Since (x=1) is included, (2) is included, and since (x=4) is excluded, (-7) is excluded.

Step 3

Exam Tip

रैखिक रूप (5-3x) घटता है, इसलिए सिरों का क्रम उलटता है। (x=1) शामिल है इसलिए (2) शामिल है और (x=4) शामिल नहीं है इसलिए (-7) शामिल नहीं है।

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असमानता \(\frac{4x-5}{3}\le x+2\) का सही हल कौन सा है?

What is the correct solution of \(\frac{4x-5}{3}\le x+2\)?

Explanation opens after your attempt
Correct Answer

A. \(x\le 11\)

Step 1

Concept

Multiplying by positive (3) gives \(4x-5\le 3x+6\), so \(x\le 11\). Removing a positive denominator does not change the sign.

Step 2

Why this answer is correct

The correct answer is A. \(x\le 11\). Multiplying by positive (3) gives \(4x-5\le 3x+6\), so \(x\le 11\). Removing a positive denominator does not change the sign.

Step 3

Exam Tip

धनात्मक (3) से गुणा करने पर \(4x-5\le 3x+6\), इसलिए \(x\le 11\) मिलता है। धनात्मक हर हटाने पर चिन्ह नहीं बदलता।

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यदि (a>b>0) और (c<0) है, तो (ac) और (bc) के बीच कौन सा संबंध सही है?

If (a>b>0) and (c<0), which relation between (ac) and (bc) is correct?

Explanation opens after your attempt
Correct Answer

A. (ac<bc)

Step 1

Concept

Multiplying (a>b) by negative (c) reverses the inequality sign. Therefore (ac<bc) is correct.

Step 2

Why this answer is correct

The correct answer is A. (ac<bc). Multiplying (a>b) by negative (c) reverses the inequality sign. Therefore (ac<bc) is correct.

Step 3

Exam Tip

(a>b) को ऋणात्मक (c) से गुणा करने पर असमानता का चिन्ह उलट जाता है। इसलिए (ac<bc) सही है।

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FAQs

Class 11 Mathematics Quiz FAQs

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