Concept-wise Practice

powers MCQ Questions for Class 10

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

Practice Questions

171 questions tagged with powers.

Question 121/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि किसी संख्या का अभाज्य गुणनखंडन \(2^6\times3^2\) है, तो वह संख्या क्या है?

If the prime factorisation of a number is \(2^6\times3^2\), what is the number?

Explanation opens after your attempt
Correct Answer

B. 576

Step 1

Concept

Calculate \(2^6=64\) and \(3^2=9\).

Step 2

Why this answer is correct

\(64\times9=576\).

Step 3

Exam Tip

In a form with powers, it is easier to evaluate powers first. चरण 1: \(2^6=64\) और \(3^2=9\) निकालें। चरण 2: \(64\times9=576\)। चरण 3: घात वाले रूप में पहले घातों का मान निकालना आसान होता है।

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Question 122/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 2520 के अभाज्य गुणनखंडन में 2 की घात कितनी है?

What is the power of 2 in the prime factorisation of 2520?

Explanation opens after your attempt
Correct Answer

B. 3

Step 1

Concept

Write \(2520=252\times10\).

Step 2

Why this answer is correct

\(252=2^2\times3^2\times7\) and \(10=2\times5\), so \(2520=2^3\times3^2\times5\times7\).

Step 3

Exam Tip

The number of times 2 appears is its power. चरण 1: \(2520=252\times10\) लिखें। चरण 2: \(252=2^2\times3^2\times7\) और \(10=2\times5\), इसलिए \(2520=2^3\times3^2\times5\times7\)। चरण 3: 2 जितनी बार आए, वही उसकी घात है।

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Question 123/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि \(x=2^4\times3^2\times7\), तो (x) का मान क्या है?

If \(x=2^4\times3^2\times7\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

C. 1008

Step 1

Concept

First calculate \(2^4=16\) and \(3^2=9\).

Step 2

Why this answer is correct

\(16\times9\times7=1008\).

Step 3

Exam Tip

Simplify powers first while finding the number. चरण 1: पहले \(2^4=16\) और \(3^2=9\) निकालें। चरण 2: \(16\times9\times7=1008\)। चरण 3: संख्या निकालते समय पहले घातों को सरल करें।

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Question 124/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 1176 का सही अभाज्य गुणनखंडन क्या है?

What is the correct prime factorisation of 1176?

Explanation opens after your attempt
Correct Answer

A. \(2^3\times3\times7^2\)

Step 1

Concept

Write \(1176=24\times49\).

Step 2

Why this answer is correct

\(24=2^3\times3\) and \(49=7^2\), so \(1176=2^3\times3\times7^2\).

Step 3

Exam Tip

24 and 49 are composite, so write prime powers in the final form. चरण 1: \(1176=24\times49\) लिखें। चरण 2: \(24=2^3\times3\) और \(49=7^2\), इसलिए \(1176=2^3\times3\times7^2\)। चरण 3: 24 और 49 संयुक्त हैं, इसलिए अंतिम रूप में अभाज्य घातें लिखें।

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Question 125/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(x=2^3\times3^2\) और \(y=2^2\times3^3\), तो (xy) में 2 की घात क्या होगी?

If \(x=2^3\times3^2\) and \(y=2^2\times3^3\), what will be the power of 2 in (xy)?

Explanation opens after your attempt
Correct Answer

C. 5

Step 1

Concept

In (xy), the powers of the same base 2 are added.

Step 2

Why this answer is correct

The power of 2 in (x) is 3 and in (y) is 2.

Step 3

Exam Tip

So the power of 2 in (xy) is (3+2=5). चरण 1: (xy) में समान आधार 2 की घातें जुड़ेंगी। चरण 2: (x) में 2 की घात 3 है और (y) में 2 की घात 2 है। चरण 3: इसलिए (xy) में 2 की घात (3+2=5) होगी।

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Question 126/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

संख्या 1323 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 1323?

Explanation opens after your attempt
Correct Answer

A. \(3^3\times7^2\)

Step 1

Concept

Write \(1323=27\times49\).

Step 2

Why this answer is correct

\(27=3^3\) and \(49=7^2\), so \(1323=3^3\times7^2\).

Step 3

Exam Tip

27 and 49 are composite, so write prime powers in the final form. चरण 1: \(1323=27\times49\) लिखें। चरण 2: \(27=3^3\) और \(49=7^2\), इसलिए \(1323=3^3\times7^2\)। चरण 3: 27 और 49 संयुक्त हैं, इसलिए अंतिम रूप में अभाज्य घातें लिखें।

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Question 127/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(a=2^3\times5^2\) और \(b=2^2\times5^3\), तो (ab) के अभाज्य गुणनखंडन में 5 की घात क्या होगी?

If \(a=2^3\times5^2\) and \(b=2^2\times5^3\), what will be the power of 5 in the prime factorisation of (ab)?

Explanation opens after your attempt
Correct Answer

C. 5

Step 1

Concept

While multiplying, add the exponents of the same prime base.

Step 2

Why this answer is correct

The power of 5 in (a) is 2 and in (b) is 3.

Step 3

Exam Tip

In (ab), the power of 5 will be (2+3=5). चरण 1: गुणा करते समय समान अभाज्य आधार की घातें जोड़ते हैं। चरण 2: (a) में 5 की घात 2 और (b) में 5 की घात 3 है। चरण 3: (ab) में 5 की घात (2+3=5) होगी।

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Question 128/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(a=2^2\times3^2\times5\) और \(b=2\times3\times5\times7\), तो (ab) के अभाज्य गुणनखंडन में 3 की घात क्या होगी?

If \(a=2^2\times3^2\times5\) and \(b=2\times3\times5\times7\), what will be the power of 3 in the prime factorisation of (ab)?

Explanation opens after your attempt
Correct Answer

C. 3

Step 1

Concept

In multiplication, powers with the same base are added.

Step 2

Why this answer is correct

The power of 3 in (a) is 2 and in (b) is 1.

Step 3

Exam Tip

In (ab), the power of 3 will be (2+1=3). चरण 1: गुणन में समान आधार की घातें जुड़ती हैं। चरण 2: (a) में 3 की घात 2 है और (b) में 3 की घात 1 है। चरण 3: (ab) में 3 की घात (2+1=3) होगी।

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Question 129/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(r=2^6\times3\times5^2\), तो (r) का मान क्या है?

If \(r=2^6\times3\times5^2\), what is the value of (r)?

Explanation opens after your attempt
Correct Answer

B. 4800

Step 1

Concept

Calculate \(2^6=64\) and \(5^2=25\).

Step 2

Why this answer is correct

\(64\times3\times25=4800\).

Step 3

Exam Tip

Simplifying powers first makes multiplication easier. चरण 1: \(2^6=64\) और \(5^2=25\) निकालें। चरण 2: \(64\times3\times25=4800\)। चरण 3: पहले घातों को सरल करने से गुणा आसान हो जाता है।

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Question 130/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(A=2^5\times3^2\) और \(B=2^3\times3^4\), तो (A) और (B) का लघुत्तम समापवर्त्य क्या है?

If \(A=2^5\times3^2\) and \(B=2^3\times3^4\), what is the LCM of (A) and (B)?

Explanation opens after your attempt
Correct Answer

B. 2592

Step 1

Concept

For LCM, take the highest powers.

Step 2

Why this answer is correct

The highest powers are \(2^5\) and \(3^4\).

Step 3

Exam Tip

\(32\times81=2592\), so the answer is 2592. चरण 1: लघुत्तम समापवर्त्य के लिए बड़ी घातें लें। चरण 2: बड़ी घातें \(2^5\) और \(3^4\) हैं। चरण 3: \(32\times81=2592\), इसलिए उत्तर 2592 है।

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Question 131/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(A=2^5\times3^2\) और \(B=2^3\times3^4\), तो (A) और (B) का महत्तम समापवर्तक क्या है?

If \(A=2^5\times3^2\) and \(B=2^3\times3^4\), what is the HCF of (A) and (B)?

Explanation opens after your attempt
Correct Answer

A. 72

Step 1

Concept

For HCF, take the smaller powers of common prime factors.

Step 2

Why this answer is correct

The smaller powers are \(2^3\) and \(3^2\).

Step 3

Exam Tip

\(2^3\times3^2=8\times9=72\), so the answer is 72. चरण 1: महत्तम समापवर्तक के लिए समान अभाज्य गुणनखंडों की छोटी घात लें। चरण 2: छोटी घातें \(2^3\) और \(3^2\) हैं। चरण 3: \(2^3\times3^2=8\times9=72\), इसलिए उत्तर 72 है।

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Question 132/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि \(n=3^4\times5^2\), तो (n) का मान क्या है?

If \(n=3^4\times5^2\), what is the value of (n)?

Explanation opens after your attempt
Correct Answer

B. 2025

Step 1

Concept

Calculate \(3^4=81\) and \(5^2=25\).

Step 2

Why this answer is correct

\(81\times25=2025\).

Step 3

Exam Tip

In questions with powers, simplify the powers first. चरण 1: \(3^4=81\) और \(5^2=25\) निकालें। चरण 2: \(81\times25=2025\)। चरण 3: घातों वाले प्रश्न में पहले घातों को सरल करना चाहिए।

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Question 133/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

संख्या 1024 का अभाज्य गुणनखंडन क्या है?

What is the prime factorisation of 1024?

Explanation opens after your attempt
Correct Answer

A. \(2^{10}\)

Step 1

Concept

Divide 1024 repeatedly by 2.

Step 2

Why this answer is correct

\(1024=2^{10}\).

Step 3

Exam Tip

\(4^5\) and \(32^2\) can give the value, but 4 and 32 are not prime. चरण 1: 1024 को 2 से बार-बार भाग दें। चरण 2: \(1024=2^{10}\) होता है। चरण 3: \(4^5\) और \(32^2\) मान तो दे सकते हैं, पर 4 और 32 अभाज्य नहीं हैं।

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Question 134/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

यदि किसी संख्या का अभाज्य गुणनखंडन \(2^5\times3^2\) है, तो वह संख्या क्या है?

If the prime factorisation of a number is \(2^5\times3^2\), what is the number?

Explanation opens after your attempt
Correct Answer

B. 288

Step 1

Concept

Calculate \(2^5=32\) and \(3^2=9\).

Step 2

Why this answer is correct

\(32\times9=288\).

Step 3

Exam Tip

In prime factorisation with powers, evaluate powers first. चरण 1: \(2^5=32\) और \(3^2=9\) निकालें। चरण 2: \(32\times9=288\)। चरण 3: घात वाले अभाज्य गुणनखंडन में पहले घातों का मान निकालें।

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Question 135/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

किस संख्या का अभाज्य गुणनखंडन \(2^3\times3^2\times5\) है?

Which number has prime factorisation \(2^3\times3^2\times5\)?

Explanation opens after your attempt
Correct Answer

C. 360

Step 1

Concept

Calculate \(2^3=8\) and \(3^2=9\).

Step 2

Why this answer is correct

\(8\times9\times5=360\).

Step 3

Exam Tip

When converting prime factorisation into a number, multiply all factors. चरण 1: \(2^3=8\) और \(3^2=9\) निकालें। चरण 2: \(8\times9\times5=360\)। चरण 3: दिए गए अभाज्य गुणनखंडन को संख्या में बदलते समय सभी गुणनखंडों का गुणा करें।

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Question 136/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

संख्या 1512 के अभाज्य गुणनखंडन में 3 की घात कितनी है?

What is the power of 3 in the prime factorisation of 1512?

Explanation opens after your attempt
Correct Answer

C. 3

Step 1

Concept

Write \(1512=8\times189\).

Step 2

Why this answer is correct

\(8=2^3\) and \(189=3^3\times7\), so \(1512=2^3\times3^3\times7\).

Step 3

Exam Tip

The number of times 3 appears as a factor is its power. चरण 1: \(1512=8\times189\) लिखें। चरण 2: \(8=2^3\) और \(189=3^3\times7\), इसलिए \(1512=2^3\times3^3\times7\)। चरण 3: 3 जितनी बार गुणनखंड में आए, वही उसकी घात होती है।

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Question 137/171 Medium Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 5

संख्या 756 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 756?

Explanation opens after your attempt
Correct Answer

A. \(2^2\times3^3\times7\)

Step 1

Concept

Write \(756=84\times9\).

Step 2

Why this answer is correct

\(84=2^2\times3\times7\) and \(9=3^2\), so \(756=2^2\times3^3\times7\).

Step 3

Exam Tip

Combine repeated prime factors using powers. चरण 1: \(756=84\times9\) लिखें। चरण 2: \(84=2^2\times3\times7\) और \(9=3^2\), इसलिए \(756=2^2\times3^3\times7\)। चरण 3: समान अभाज्य गुणनखंडों को घात के रूप में जोड़ें।

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Question 138/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या \(2^4\times3\times5^2\) का मान क्या है?

What is the value of \(2^4\times3\times5^2\)?

Explanation opens after your attempt
Correct Answer

C. 1200

Step 1

Concept

Find \(2^4=16\) and \(5^2=25\).

Step 2

Why this answer is correct

\(16\times3\times25=1200\).

Step 3

Exam Tip

In questions with powers, simplify the powers first. चरण 1: \(2^4=16\) और \(5^2=25\) निकालें। चरण 2: \(16\times3\times25=1200\)। चरण 3: कई घातों वाले प्रश्नों में पहले घातों को सरल करें।

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Question 139/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 512 का अभाज्य गुणनखंडन क्या है?

What is the prime factorisation of 512?

Explanation opens after your attempt
Correct Answer

A. \(2^9\)

Step 1

Concept

Divide 512 repeatedly by 2.

Step 2

Why this answer is correct

\(512=2^9\), so this is the prime factorisation.

Step 3

Exam Tip

4 and 16 are composite, so do not keep them in the final prime form. चरण 1: 512 को बार-बार 2 से भाग दें। चरण 2: \(512=2^9\), इसलिए यही अभाज्य गुणनखंडन है। चरण 3: 4 और 16 संयुक्त हैं, इसलिए उन्हें अंतिम अभाज्य रूप में न रखें।

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Question 140/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि किसी संख्या का अभाज्य गुणनखंडन \(2^6\times3\) है, तो वह संख्या क्या है?

If the prime factorisation of a number is \(2^6\times3\), what is the number?

Explanation opens after your attempt
Correct Answer

C. 192

Step 1

Concept

Find \(2^6=64\).

Step 2

Why this answer is correct

\(64\times3=192\), so the number is 192.

Step 3

Exam Tip

First evaluate the power, then multiply. चरण 1: \(2^6=64\) निकालें। चरण 2: \(64\times3=192\), इसलिए संख्या 192 है। चरण 3: पहले घात का मान निकालें और फिर गुणा करें।

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Question 141/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि \(625=5^4\), तो इसमें 5 की घात कितनी है?

If \(625=5^4\), what is the power of 5 in it?

Explanation opens after your attempt
Correct Answer

C. 4

Step 1

Concept

Look at the given form \(625=5^4\).

Step 2

Why this answer is correct

The exponent written on 5 is 4.

Step 3

Exam Tip

It is important to identify the base and the exponent separately. चरण 1: दिए गए रूप \(625=5^4\) को देखें। चरण 2: 5 के ऊपर लिखी घात 4 है। चरण 3: आधार और घात को अलग-अलग पहचानना जरूरी है।

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Question 142/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 243 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 243?

Explanation opens after your attempt
Correct Answer

A. \(3^5\)

Step 1

Concept

Divide 243 repeatedly by 3.

Step 2

Why this answer is correct

\(243=3^5\), so this is the prime factorisation.

Step 3

Exam Tip

9 and 81 are composite, so do not keep them in the final prime form. चरण 1: 243 को बार-बार 3 से भाग दें। चरण 2: \(243=3^5\), इसलिए यही अभाज्य गुणनखंडन है। चरण 3: 9 और 81 संयुक्त हैं, इसलिए अंतिम अभाज्य रूप में न रखें।

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Question 143/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि \(a=2^3\times3\times7\) और \(b=2^2\times3^2\times7\), तो (a) और (b) का लघुत्तम समापवर्त्य क्या है?

If \(a=2^3\times3\times7\) and \(b=2^2\times3^2\times7\), what is the LCM of (a) and (b)?

Explanation opens after your attempt
Correct Answer

B. 504

Step 1

Concept

For LCM, take the highest powers of all prime factors.

Step 2

Why this answer is correct

\(2^3\times3^2\times7=8\times9\times7=504\).

Step 3

Exam Tip

LCM uses highest powers. चरण 1: लघुत्तम समापवर्त्य के लिए सभी अभाज्य गुणनखंडों की बड़ी घात लें। चरण 2: \(2^3\times3^2\times7=8\times9\times7=504\)। चरण 3: लघुत्तम समापवर्त्य में बड़ी घातों का प्रयोग करें।

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Question 144/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि \(a=2^3\times3\times7\) और \(b=2^2\times3^2\times7\), तो (a) और (b) का महत्तम समापवर्तक क्या है?

If \(a=2^3\times3\times7\) and \(b=2^2\times3^2\times7\), what is the HCF of (a) and (b)?

Explanation opens after your attempt
Correct Answer

A. 84

Step 1

Concept

The common prime factors are 2, 3, and 7.

Step 2

Why this answer is correct

The smaller powers are \(2^2\), \(3^1\), and \(7^1\), so \(4\times3\times7=84\).

Step 3

Exam Tip

HCF uses smaller powers. चरण 1: समान अभाज्य गुणनखंड 2, 3 और 7 हैं। चरण 2: छोटी घातें \(2^2\), \(3^1\) और \(7^1\) हैं, इसलिए \(4\times3\times7=84\)। चरण 3: महत्तम समापवर्तक में छोटी घातें ली जाती हैं।

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Question 145/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या \(3^3\times5\) का मान क्या है?

What is the value of \(3^3\times5\)?

Explanation opens after your attempt
Correct Answer

C. 135

Step 1

Concept

First find \(3^3=27\).

Step 2

Why this answer is correct

\(27\times5=135\), so the number is 135.

Step 3

Exam Tip

In a form with powers, evaluate the power first. चरण 1: पहले \(3^3=27\) निकालें। चरण 2: \(27\times5=135\), इसलिए संख्या 135 है। चरण 3: घात वाले रूप में पहले घात का मान निकालें।

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Question 146/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 288 का अभाज्य गुणनखंडन क्या है?

What is the prime factorisation of 288?

Explanation opens after your attempt
Correct Answer

A. \(2^5\times3^2\)

Step 1

Concept

Write \(288=32\times9\).

Step 2

Why this answer is correct

\(32=2^5\) and \(9=3^2\), so \(288=2^5\times3^2\).

Step 3

Exam Tip

32 and 9 are composite, so write prime powers in the final form. चरण 1: \(288=32\times9\) लिखें। चरण 2: \(32=2^5\) और \(9=3^2\), इसलिए \(288=2^5\times3^2\)। चरण 3: 32 और 9 संयुक्त हैं, इसलिए अंतिम रूप में अभाज्य घातें लिखें।

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Question 147/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

यदि दो संख्याओं के अभाज्य गुणनखंड \(2^4\times3\) और \(2^2\times3^2\) हैं, तो उनका महत्तम समापवर्तक क्या होगा?

If two numbers have prime factorisations \(2^4\times3\) and \(2^2\times3^2\), what is their HCF?

Explanation opens after your attempt
Correct Answer

A. 12

Step 1

Concept

For HCF, take smaller powers of common prime factors.

Step 2

Why this answer is correct

The smaller power of (2) is 2 and of (3) is 1, so \(2^2\times3=12\).

Step 3

Exam Tip

Use smaller powers for HCF. चरण 1: महत्तम समापवर्तक के लिए समान अभाज्य गुणनखंडों की छोटी घात लें। चरण 2: (2) की छोटी घात 2 और (3) की छोटी घात 1 है, इसलिए \(2^2\times3=12\)। चरण 3: महत्तम समापवर्तक में छोटी घातों का प्रयोग करें।

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Question 148/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या \(2^3\times3\times7\) किसके बराबर है?

The number \(2^3\times3\times7\) is equal to what?

Explanation opens after your attempt
Correct Answer

C. 168

Step 1

Concept

First find \(2^3=8\).

Step 2

Why this answer is correct

\(8\times3\times7=168\), so the number is 168.

Step 3

Exam Tip

In expressions with powers, evaluate the power first. चरण 1: पहले \(2^3=8\) निकालें। चरण 2: \(8\times3\times7=168\), इसलिए संख्या 168 है। चरण 3: घातों वाले रूप में पहले घात का मान निकालना आसान रहता है।

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Question 149/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 112 के अभाज्य गुणनखंडन में 2 की घात कितनी है?

In the prime factorisation of 112, what is the power of 2?

Explanation opens after your attempt
Correct Answer

B. 4

Step 1

Concept

Write \(112=16\times7\).

Step 2

Why this answer is correct

\(16=2^4\), so \(112=2^4\times7\).

Step 3

Exam Tip

Count repeated prime factors to write the exponent. चरण 1: \(112=16\times7\) लिखें। चरण 2: \(16=2^4\), इसलिए \(112=2^4\times7\)। चरण 3: समान अभाज्य गुणनखंडों को गिनकर घात लिखें।

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Question 150/171 Easy Mathematics Chapter 1: Real Numbers 2: Fundamental Theorem of Arithmetic Class 10 Level 6

संख्या 80 का सही अभाज्य गुणनखंडन कौन सा है?

Which is the correct prime factorisation of 80?

Explanation opens after your attempt
Correct Answer

A. \(2^4\times5\)

Step 1

Concept

(80) can be written as \(16\times5\).

Step 2

Why this answer is correct

\(16=2^4\), so \(80=2^4\times5\).

Step 3

Exam Tip

In the final prime factorisation, keep only prime numbers. चरण 1: \(80=16\times5\) लिखा जा सकता है। चरण 2: \(16=2^4\), इसलिए \(80=2^4\times5\)। चरण 3: अंतिम अभाज्य गुणनखंडन में केवल अभाज्य संख्याएं रखें।

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