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exponent-sum MCQ Questions for Class 10

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Practice Questions

1 questions tagged with exponent-sum.

Question 1/1 Expert Mathematics Chapter 1: Real Numbers 3: Prime factorisation Class 10 Level 9

(144) के अभाज्य गुणनखंडन में (2) और (3) की घातों का योग क्या है?

In the prime factorisation of (144), what is the sum of the exponents of (2) and (3)?

Explanation opens after your attempt
Correct Answer

A. 6

Step 1

Concept

\(144=12^2\).

Step 2

Why this answer is correct

Since \(12=2^2 \times 3\), \(144=2^4 \times 3^2\); the sum is (4+2=6).

Step 3

Exam Tip

When squaring a number, its prime exponents double. चरण 1: \(144=12^2\) है। चरण 2: \(12=2^2 \times 3\), इसलिए \(144=2^4 \times 3^2\); घातों का योग (4+2=6) है। चरण 3: वर्ग संख्या का गुणनखंडन करते समय घातें दोगुनी हो जाती हैं।

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