Medium Mathematics Chapter 1: Real Numbers Class 10 Level 10

कौन सा विकल्प अभाज्य गुणनखंडन नहीं है?

Which option is not a prime factorisation?

Explanation opens after your attempt
Correct Answer

B. \(2 \times 9 \times 5\)

Step 1

Concept

In prime factorisation, every base must be a prime number.

Step 2

Why this answer is correct

(9) is not prime because \(9=3^2\), so the second option is not prime factorisation.

Step 3

Exam Tip

Always check each base carefully. चरण 1: अभाज्य गुणनखंडन में सभी आधार अभाज्य संख्याएं होनी चाहिए। चरण 2: (9) अभाज्य नहीं है क्योंकि \(9=3^2\), इसलिए दूसरा विकल्प सही अभाज्य गुणनखंडन नहीं है। चरण 3: हर आधार की जांच जरूर करें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is B. \(2 \times 9 \times 5\).

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