Concept-wise Practice

fractions MCQ Questions for Class 10

fractions se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

91 questions tagged with fractions.

कौन सी संख्या संख्या रेखा पर \(\frac{2}{3}\) और \(\frac{3}{4}\) के बीच है?

Which number lies between \(\frac{2}{3}\) and \(\frac{3}{4}\) on the number line?

Explanation opens after your attempt
Correct Answer

B. (0.7)

Step 1

Concept

\(\frac{2}{3}\approx0.667\) and \(\frac{3}{4}=0.75\), so (0.7) lies between them. Use decimal form for comparison.

Step 2

Why this answer is correct

The correct answer is B. (0.7). \(\frac{2}{3}\approx0.667\) and \(\frac{3}{4}=0.75\), so (0.7) lies between them. Use decimal form for comparison.

Step 3

Exam Tip

\(\frac{2}{3}\approx0.667\) और \(\frac{3}{4}=0.75\), इसलिए (0.7) बीच में है। तुलना के लिए दशमलव रूप उपयोग करें।

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संख्या रेखा पर (0.125) किस भिन्न के समान बिंदु है?

On the number line, (0.125) is the same point as which fraction?

Explanation opens after your attempt
Correct Answer

B. \(\frac{1}{8}\)

Step 1

Concept

\(0.125=\frac{125}{1000}=\frac{1}{8}\). Start with denominator (10), (100), or (1000), then simplify.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{1}{8}\). \(0.125=\frac{125}{1000}=\frac{1}{8}\). Start with denominator (10), (100), or (1000), then simplify.

Step 3

Exam Tip

\(0.125=\frac{125}{1000}=\frac{1}{8}\) है। दशमलव को हर (10), (100), या (1000) से शुरू करके सरल करें।

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संख्या रेखा पर \(\frac{5}{4}\) और \(\frac{9}{4}\) के ठीक बीच कौन सा बिंदु होगा?

Which point lies exactly midway between \(\frac{5}{4}\) and \(\frac{9}{4}\) on the number line?

Explanation opens after your attempt
Correct Answer

B. \(\frac{7}{4}\)

Step 1

Concept

The midpoint is \(\frac{\frac{5}{4}+\frac{9}{4}}{2}=\frac{7}{4}\). The average of two fractions gives the midpoint.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{7}{4}\). The midpoint is \(\frac{\frac{5}{4}+\frac{9}{4}}{2}=\frac{7}{4}\). The average of two fractions gives the midpoint.

Step 3

Exam Tip

मध्य बिंदु \(\frac{\frac{5}{4}+\frac{9}{4}}{2}=\frac{7}{4}\) है। दो भिन्नों का औसत मध्य बिंदु देता है।

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यदि (-1) से (1) तक की दूरी को (8) बराबर भागों में बांटा जाए तो प्रत्येक भाग की लंबाई क्या होगी?

If the distance from (-1) to (1) is divided into (8) equal parts, what is the length of each part?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

The total distance is (2), so each part is \(\frac{2}{8}=\frac{1}{4}\). Find the distance and divide by equal parts.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{1}{4}\). The total distance is (2), so each part is \(\frac{2}{8}=\frac{1}{4}\). Find the distance and divide by equal parts.

Step 3

Exam Tip

कुल दूरी (2) है इसलिए प्रत्येक भाग \(\frac{2}{8}=\frac{1}{4}\) होगा। दूरी निकालकर बराबर भागों से विभाजित करें।

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संख्या रेखा पर \(\frac{4}{3}\), \(\sqrt{2}\), और (1.5) का बाएं से दाएं सही क्रम क्या है?

What is the correct left to right order of \(\frac{4}{3}\), \(\sqrt{2}\), and (1.5) on the number line?

Explanation opens after your attempt
Correct Answer

A. \(\frac{4}{3},\sqrt{2},1.5\)

Step 1

Concept

\(\frac{4}{3}\approx1.33\) and \(\sqrt{2}\approx1.41\), so the order is \(\frac{4}{3}<\sqrt{2}<1.5\). Estimate values for comparison.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{4}{3},\sqrt{2},1.5\). \(\frac{4}{3}\approx1.33\) and \(\sqrt{2}\approx1.41\), so the order is \(\frac{4}{3}<\sqrt{2}<1.5\). Estimate values for comparison.

Step 3

Exam Tip

\(\frac{4}{3}\approx1.33\), \(\sqrt{2}\approx1.41\), इसलिए क्रम \(\frac{4}{3}<\sqrt{2}<1.5\) है। तुलना के लिए अनुमान लगाएं।

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यदि (0) से (3) तक की रेखा को (12) बराबर भागों में बांटा जाए तो (0) के बाद सातवां बिंदु कौन सा मान दिखाएगा?

If the line segment from (0) to (3) is divided into (12) equal parts, what value will the seventh point after (0) show?

Explanation opens after your attempt
Correct Answer

B. \(\frac{7}{4}\)

Step 1

Concept

Each part is \(\frac{3}{12}=\frac{1}{4}\), so the seventh point is \(\frac{7}{4}\). Divide the total length by equal parts.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{7}{4}\). Each part is \(\frac{3}{12}=\frac{1}{4}\), so the seventh point is \(\frac{7}{4}\). Divide the total length by equal parts.

Step 3

Exam Tip

प्रत्येक भाग \(\frac{3}{12}=\frac{1}{4}\) है इसलिए सातवां बिंदु \(\frac{7}{4}\) है। कुल लंबाई को बराबर भागों से बांटें।

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संख्या रेखा पर \(\frac{2}{5}\) और \(\frac{4}{5}\) के ठीक बीच कौन सी संख्या होगी?

Which number will lie exactly midway between \(\frac{2}{5}\) and \(\frac{4}{5}\) on the number line?

Explanation opens after your attempt
Correct Answer

B. \(\frac{3}{5}\)

Step 1

Concept

The midpoint is \(\frac{\frac{2}{5}+\frac{4}{5}}{2}=\frac{3}{5}\). To find the exact middle point, take the average of the two points.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{3}{5}\). The midpoint is \(\frac{\frac{2}{5}+\frac{4}{5}}{2}=\frac{3}{5}\). To find the exact middle point, take the average of the two points.

Step 3

Exam Tip

मध्य संख्या \(\frac{\frac{2}{5}+\frac{4}{5}}{2}=\frac{3}{5}\) है। दो बिंदुओं के ठीक बीच के लिए उनका औसत लें।

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संख्या रेखा पर \(\frac{5}{6}\) और \(\frac{7}{8}\) में कौन सा बिंदु दाईं ओर होगा?

On the number line, which point will be to the right, \(\frac{5}{6}\) or \(\frac{7}{8}\)?

Explanation opens after your attempt
Correct Answer

B. \(\frac{7}{8}\)

Step 1

Concept

\(\frac{5}{6}\approx0.833\) and \(\frac{7}{8}=0.875\), so \(\frac{7}{8}\) is to the right. Use decimals or cross multiplication to compare.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{7}{8}\). \(\frac{5}{6}\approx0.833\) and \(\frac{7}{8}=0.875\), so \(\frac{7}{8}\) is to the right. Use decimals or cross multiplication to compare.

Step 3

Exam Tip

\(\frac{5}{6}\approx0.833\) और \(\frac{7}{8}=0.875\), इसलिए \(\frac{7}{8}\) दाईं ओर है। तुलना के लिए दशमलव या क्रॉस गुणन करें।

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यदि (0) और (2) के बीच की संख्या रेखा को (8) बराबर भागों में बांटा जाए तो प्रत्येक भाग की लंबाई क्या होगी?

If the number line segment between (0) and (2) is divided into (8) equal parts, what is the length of each part?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

The total length is (2) and there are (8) parts, so each part is \(\frac{2}{8}=\frac{1}{4}\). Divide total length by the number of parts.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{1}{4}\). The total length is (2) and there are (8) parts, so each part is \(\frac{2}{8}=\frac{1}{4}\). Divide total length by the number of parts.

Step 3

Exam Tip

कुल लंबाई (2) है और (8) भाग हैं इसलिए प्रत्येक भाग \(\frac{2}{8}=\frac{1}{4}\) है। बराबर भाग में कुल लंबाई को भागों से बांटें।

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कौन सा युग्म संख्या रेखा पर एक ही बिंदु को दर्शाता है?

Which pair represents the same point on the number line?

Explanation opens after your attempt
Correct Answer

B. \(\frac{3}{4}\) और (0.75)\(\frac{3}{4}\) and (0.75)

Step 1

Concept

\(\frac{3}{4}=0.75\), so both are the same point. Convert forms to identify equal points.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{3}{4}\) और (0.75) / \(\frac{3}{4}\) and (0.75). \(\frac{3}{4}=0.75\), so both are the same point. Convert forms to identify equal points.

Step 3

Exam Tip

\(\frac{3}{4}=0.75\), इसलिए दोनों एक ही बिंदु हैं। समान बिंदु पहचानने के लिए रूप बदलें।

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संख्या रेखा पर (0.4), \(\frac{1}{2}\), और (0.6) को बाएं से दाएं सही क्रम में लिखिए।

Write (0.4), \(\frac{1}{2}\), and (0.6) in correct left to right order on the number line.

Explanation opens after your attempt
Correct Answer

A. \(0.4,\frac{1}{2},0.6\)

Step 1

Concept

\(\frac{1}{2}=0.5\), so the order is (0.4<0.5<0.6). Convert fractions to decimals before comparing.

Step 2

Why this answer is correct

The correct answer is A. \(0.4,\frac{1}{2},0.6\). \(\frac{1}{2}=0.5\), so the order is (0.4<0.5<0.6). Convert fractions to decimals before comparing.

Step 3

Exam Tip

\(\frac{1}{2}=0.5\), इसलिए क्रम (0.4<0.5<0.6) है। तुलना से पहले भिन्न को दशमलव में बदलें।

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संख्या रेखा पर \(\frac{2}{5}\) किस दो पूर्णांकों के बीच होगा?

Between which two integers will \(\frac{2}{5}\) lie on the number line?

Explanation opens after your attempt
Correct Answer

A. (0) और (1)(0) and (1)

Step 1

Concept

\(\frac{2}{5}\) is greater than (0) and less than (1). In exams, place a proper fraction between (0) and (1).

Step 2

Why this answer is correct

The correct answer is A. (0) और (1) / (0) and (1). \(\frac{2}{5}\) is greater than (0) and less than (1). In exams, place a proper fraction between (0) and (1).

Step 3

Exam Tip

\(\frac{2}{5}\) का मान (0) से अधिक और (1) से कम है। परीक्षा में उचित भिन्न को (0) और (1) के बीच रखें।

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यदि संख्या रेखा पर (1) और (2) के बीच के भाग को (4) बराबर भागों में बांटा जाए, तो (1.75) किस बिंदु पर होगा?

If the part between (1) and (2) on the number line is divided into (4) equal parts, where will (1.75) lie?

Explanation opens after your attempt
Correct Answer

C. (1) के बाद तीसरा भागThird part after (1)

Step 1

Concept

\(1.75=1+\frac{3}{4}\), so it lies at the third equal part after (1). Converting decimals to fractions helps locate points easily.

Step 2

Why this answer is correct

The correct answer is C. (1) के बाद तीसरा भाग / Third part after (1). \(1.75=1+\frac{3}{4}\), so it lies at the third equal part after (1). Converting decimals to fractions helps locate points easily.

Step 3

Exam Tip

\(1.75=1+\frac{3}{4}\), इसलिए यह (1) के बाद तीसरे बराबर भाग पर होगा। दशमलव को भिन्न में बदलकर स्थान पहचानना आसान होता है।

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संख्या रेखा पर \(-\frac{1}{2}\) किसके बराबर स्थान पर होगा?

On the number line \(-\frac{1}{2}\) will be at the same position as which value?

Explanation opens after your attempt
Correct Answer

A. (-0.5)

Step 1

Concept

\(-\frac{1}{2}=-0.5\), so both represent the same point. Converting fractions to decimals makes comparison easier.

Step 2

Why this answer is correct

The correct answer is A. (-0.5). \(-\frac{1}{2}=-0.5\), so both represent the same point. Converting fractions to decimals makes comparison easier.

Step 3

Exam Tip

\(-\frac{1}{2}=-0.5\), इसलिए दोनों एक ही बिंदु दिखाते हैं। भिन्न को दशमलव में बदलना तुलना को आसान बनाता है।

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संख्या रेखा पर \(\frac{3}{4}\) को किस स्थान पर दिखाया जाएगा?

Where will \(\frac{3}{4}\) be shown on the number line?

Explanation opens after your attempt
Correct Answer

A. (0) और (1) के बीचBetween (0) and (1)

Step 1

Concept

\(\frac{3}{4}\) is greater than (0) and less than (1). In exams first compare the fraction value with nearby integers.

Step 2

Why this answer is correct

The correct answer is A. (0) और (1) के बीच / Between (0) and (1). \(\frac{3}{4}\) is greater than (0) and less than (1). In exams first compare the fraction value with nearby integers.

Step 3

Exam Tip

\(\frac{3}{4}\) का मान (1) से कम और (0) से अधिक होता है। परीक्षा में भिन्न की स्थिति पहले उसके मान से पहचानें।

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संख्या रेखा पर \( \frac{8}{4}\) किस पूर्णांक के बराबर है?

On the number line, \(\frac{8}{4}\) is equal to which integer?

Explanation opens after your attempt
Correct Answer

A. (2)

Step 1

Concept

\(\frac{8}{4}=2\), so it is located at (2). Convert a simple fraction into an integer to identify the point.

Step 2

Why this answer is correct

The correct answer is A. (2). \(\frac{8}{4}=2\), so it is located at (2). Convert a simple fraction into an integer to identify the point.

Step 3

Exam Tip

\(\frac{8}{4}=2\), इसलिए यह (2) पर स्थित है। सरल भिन्न को पूर्णांक में बदलकर बिंदु पहचानें।

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संख्या रेखा पर \( \frac{2}{5}\) और \(\frac{3}{5}\) के बीच कौन-सी संख्या है?

Which number lies between \(\frac{2}{5}\) and \(\frac{3}{5}\) on the number line?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

\(\frac{2}{5}=0.4\), \(\frac{1}{2}=0.5\), and \(\frac{3}{5}=0.6\), so \(\frac{1}{2}\) lies between them. Decimal form helps in comparison.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{2}\). \(\frac{2}{5}=0.4\), \(\frac{1}{2}=0.5\), and \(\frac{3}{5}=0.6\), so \(\frac{1}{2}\) lies between them. Decimal form helps in comparison.

Step 3

Exam Tip

\(\frac{2}{5}=0.4\), \(\frac{1}{2}=0.5\), और \(\frac{3}{5}=0.6\), इसलिए \(\frac{1}{2}\) बीच में है। तुलना के लिए दशमलव रूप उपयोगी है।

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संख्या रेखा पर (1.5) को \(\frac{3}{2}\) से तुलना करने पर क्या मिलेगा?

When (1.5) is compared with \(\frac{3}{2}\) on the number line, what do we get?

Explanation opens after your attempt
Correct Answer

A. दोनों बराबर हैंboth are equal

Step 1

Concept

\(\frac{3}{2}=1.5\), so both show the same point. Identify equal values in decimal and fraction forms.

Step 2

Why this answer is correct

The correct answer is A. दोनों बराबर हैं / both are equal. \(\frac{3}{2}=1.5\), so both show the same point. Identify equal values in decimal and fraction forms.

Step 3

Exam Tip

\(\frac{3}{2}=1.5\), इसलिए दोनों एक ही बिंदु दिखाते हैं। दशमलव और भिन्न का समान मान पहचानें।

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संख्या रेखा पर \(-2+\frac{1}{2}\) की स्थिति किस संख्या जैसी होगी?

On the number line, \(-2+\frac{1}{2}\) has the same position as which number?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

\(-2+\frac{1}{2}=-\frac{4}{2}+\frac{1}{2}=-\frac{3}{2}\). Be careful with direction when adding a fraction to a negative integer.

Step 2

Why this answer is correct

The correct answer is A. \(-\frac{3}{2}\). \(-2+\frac{1}{2}=-\frac{4}{2}+\frac{1}{2}=-\frac{3}{2}\). Be careful with direction when adding a fraction to a negative integer.

Step 3

Exam Tip

\(-2+\frac{1}{2}=-\frac{4}{2}+\frac{1}{2}=-\frac{3}{2}\) है। ऋणात्मक पूर्णांक में भिन्न जोड़ते समय दिशा ध्यान रखें।

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संख्या रेखा पर \(2+\frac{1}{4}\) किस संख्या के बराबर होगा?

On the number line, \(2+\frac{1}{4}\) is equal to which number?

Explanation opens after your attempt
Correct Answer

A. \(\frac{9}{4}\)

Step 1

Concept

\(2+\frac{1}{4}=\frac{8}{4}+\frac{1}{4}=\frac{9}{4}\). Convert the integer to a fraction with the same denominator.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{9}{4}\). \(2+\frac{1}{4}=\frac{8}{4}+\frac{1}{4}=\frac{9}{4}\). Convert the integer to a fraction with the same denominator.

Step 3

Exam Tip

\(2+\frac{1}{4}=\frac{8}{4}+\frac{1}{4}=\frac{9}{4}\) है। पूर्णांक को समान हर वाली भिन्न में बदलें।

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संख्या रेखा पर \(\frac{1}{3}\) दिखाने के लिए (0) और (1) के बीच कौन-सा निशान लेना चाहिए?

To show \(\frac{1}{3}\) on the number line, which mark between (0) and (1) should be taken?

Explanation opens after your attempt
Correct Answer

A. तीन बराबर भागों में पहला निशानfirst mark among three equal parts

Step 1

Concept

For \(\frac{1}{3}\), divide (0) to (1) into (3) equal parts and take the first mark. The denominator tells the number of parts.

Step 2

Why this answer is correct

The correct answer is A. तीन बराबर भागों में पहला निशान / first mark among three equal parts. For \(\frac{1}{3}\), divide (0) to (1) into (3) equal parts and take the first mark. The denominator tells the number of parts.

Step 3

Exam Tip

\(\frac{1}{3}\) के लिए (0) से (1) तक (3) बराबर भाग करें और पहला निशान लें। हर भागों की संख्या बताता है।

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संख्या रेखा पर (1.25) को भिन्न में लिखकर कौन-सा बिंदु दर्शाएगा?

Which fractional point represents (1.25) on the number line?

Explanation opens after your attempt
Correct Answer

A. \(\frac{5}{4}\)

Step 1

Concept

\(1.25=\frac{125}{100}=\frac{5}{4}\). Converting a decimal to a simple fraction helps locate it quickly.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{5}{4}\). \(1.25=\frac{125}{100}=\frac{5}{4}\). Converting a decimal to a simple fraction helps locate it quickly.

Step 3

Exam Tip

\(1.25=\frac{125}{100}=\frac{5}{4}\) है। दशमलव को सरल भिन्न में बदलकर स्थिति जल्दी मिलती है।

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संख्या रेखा पर \(\frac{3}{4}\) को दिखाने के लिए (0) और (1) के बीच कितने बराबर भाग करने होंगे?

To show \(\frac{3}{4}\) on the number line, into how many equal parts should the segment from (0) to (1) be divided?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The denominator of \(\frac{3}{4}\) is (4), so divide (0) to (1) into (4) equal parts. The numerator tells you to move to the third mark.

Step 2

Why this answer is correct

The correct answer is A. (4). The denominator of \(\frac{3}{4}\) is (4), so divide (0) to (1) into (4) equal parts. The numerator tells you to move to the third mark.

Step 3

Exam Tip

\(\frac{3}{4}\) में हर (4) है, इसलिए (0) से (1) तक (4) बराबर भाग करें। अंश बताता है कि तीसरे निशान पर जाना है।

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(\left\(\frac{5}{8}\right\)^{-2}+\left\(\frac{8}{5}\right\)^{-2}) का मान क्या है?

What is the value of (\left\(\frac{5}{8}\right\)^{-2}+\left\(\frac{8}{5}\right\)^{-2})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{4721}{1600}\)

Step 1

Concept

Here (\left\(\frac{5}{8}\right\)^{-2}=\frac{64}{25}) and (\left\(\frac{8}{5}\right\)^{-2}=\frac{25}{64}). The sum is \(\frac{4096+625}{1600}=\frac{4721}{1600}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{4721}{1600}\). Here (\left\(\frac{5}{8}\right\)^{-2}=\frac{64}{25}) and (\left\(\frac{8}{5}\right\)^{-2}=\frac{25}{64}). The sum is \(\frac{4096+625}{1600}=\frac{4721}{1600}\).

Step 3

Exam Tip

(\left\(\frac{5}{8}\right\)^{-2}=\frac{64}{25}) और (\left\(\frac{8}{5}\right\)^{-2}=\frac{25}{64})। योग \(\frac{4096+625}{1600}=\frac{4721}{1600}\) है।

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\(\frac{5^{-2}+5^{-3}}{5^{-4}}\) का मान क्या है?

What is the value of \(\frac{5^{-2}+5^{-3}}{5^{-4}}\)?

Explanation opens after your attempt
Correct Answer

A. (30)

Step 1

Concept

Here \(5^{-2}+5^{-3}=\frac{1}{25}+\frac{1}{125}=\frac{6}{125}\), and \(5^{-4}=\frac{1}{625}\). Division gives (30).

Step 2

Why this answer is correct

The correct answer is A. (30). Here \(5^{-2}+5^{-3}=\frac{1}{25}+\frac{1}{125}=\frac{6}{125}\), and \(5^{-4}=\frac{1}{625}\). Division gives (30).

Step 3

Exam Tip

\(5^{-2}+5^{-3}=\frac{1}{25}+\frac{1}{125}=\frac{6}{125}\) और \(5^{-4}=\frac{1}{625}\)। भाग देने पर (30) मिलता है।

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(\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}) का मान क्या है?

What is the value of (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{343}{125}\)

Step 1

Concept

Since (\left\(\frac{25}{49}\right\)^{\frac{1}{2}}=\frac{5}{7}), (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}=\left\(\frac{5}{7}\right\)^{-3}=\frac{343}{125}). In exams, take the square root first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{343}{125}\). Since (\left\(\frac{25}{49}\right\)^{\frac{1}{2}}=\frac{5}{7}), (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}=\left\(\frac{5}{7}\right\)^{-3}=\frac{343}{125}). In exams, take the square root first.

Step 3

Exam Tip

(\left\(\frac{25}{49}\right\)^{\frac{1}{2}}=\frac{5}{7}), इसलिए (\left\(\frac{25}{49}\right\)^{-\frac{3}{2}}=\left\(\frac{5}{7}\right\)^{-3}=\frac{343}{125})। परीक्षा में पहले वर्गमूल निकालें।

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(\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}) का मान क्या है?

What is the value of (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{64}{27}\)

Step 1

Concept

Since (\left\(\frac{81}{256}\right\)^{\frac{1}{4}}=\frac{3}{4}), (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27}). In exams, take the fourth root first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{64}{27}\). Since (\left\(\frac{81}{256}\right\)^{\frac{1}{4}}=\frac{3}{4}), (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27}). In exams, take the fourth root first.

Step 3

Exam Tip

(\left\(\frac{81}{256}\right\)^{\frac{1}{4}}=\frac{3}{4}), इसलिए (\left\(\frac{81}{256}\right\)^{-\frac{3}{4}}=\left\(\frac{3}{4}\right\)^{-3}=\frac{64}{27})। परीक्षा में पहले चौथा मूल निकालें।

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(\left\(\frac{4}{7}\right\)^{-2}+\left\(\frac{7}{4}\right\)^{-2}) का मान क्या है?

What is the value of (\left\(\frac{4}{7}\right\)^{-2}+\left\(\frac{7}{4}\right\)^{-2})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{2657}{784}\)

Step 1

Concept

Here (\left\(\frac{4}{7}\right\)^{-2}=\frac{49}{16}) and (\left\(\frac{7}{4}\right\)^{-2}=\frac{16}{49}). The sum is \(\frac{2401+256}{784}=\frac{2657}{784}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{2657}{784}\). Here (\left\(\frac{4}{7}\right\)^{-2}=\frac{49}{16}) and (\left\(\frac{7}{4}\right\)^{-2}=\frac{16}{49}). The sum is \(\frac{2401+256}{784}=\frac{2657}{784}\).

Step 3

Exam Tip

(\left\(\frac{4}{7}\right\)^{-2}=\frac{49}{16}) और (\left\(\frac{7}{4}\right\)^{-2}=\frac{16}{49})। योग \(\frac{2401+256}{784}=\frac{2657}{784}\) है।

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\(\frac{3^{-2}+3^{-4}}{3^{-3}}\) का मान क्या है?

What is the value of \(\frac{3^{-2}+3^{-4}}{3^{-3}}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{10}{3}\)

Step 1

Concept

Here \(3^{-2}+3^{-4}=\frac{1}{9}+\frac{1}{81}=\frac{10}{81}\), and \(3^{-3}=\frac{1}{27}\). Division gives \(\frac{10}{3}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{10}{3}\). Here \(3^{-2}+3^{-4}=\frac{1}{9}+\frac{1}{81}=\frac{10}{81}\), and \(3^{-3}=\frac{1}{27}\). Division gives \(\frac{10}{3}\).

Step 3

Exam Tip

\(3^{-2}+3^{-4}=\frac{1}{9}+\frac{1}{81}=\frac{10}{81}\) और \(3^{-3}=\frac{1}{27}\)। भाग देने पर \(\frac{10}{3}\) मिलता है।

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(\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}) का मान क्या है?

What is the value of (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}})?

Explanation opens after your attempt
Correct Answer

A. \(\frac{27}{8}\)

Step 1

Concept

Since (\left\(\frac{16}{81}\right\)^{\frac{1}{4}}=\frac{2}{3}), (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}=\left\(\frac{2}{3}\right\)^{-3}=\frac{27}{8}). In exams, take the fourth root first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{27}{8}\). Since (\left\(\frac{16}{81}\right\)^{\frac{1}{4}}=\frac{2}{3}), (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}=\left\(\frac{2}{3}\right\)^{-3}=\frac{27}{8}). In exams, take the fourth root first.

Step 3

Exam Tip

(\left\(\frac{16}{81}\right\)^{\frac{1}{4}}=\frac{2}{3}), इसलिए (\left\(\frac{16}{81}\right\)^{-\frac{3}{4}}=\left\(\frac{2}{3}\right\)^{-3}=\frac{27}{8})। परीक्षा में चौथा मूल पहले निकालें।

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