Expert Mathematics Chapter 1: Real Numbers Class 10 Level 9

कौन सा अभाज्य गुणनखंडन किसी सम संख्या को दर्शाता है?

Which prime factorisation represents an even number?

Explanation opens after your attempt
Correct Answer

A. \(2 \times 3^2 \times 5\)

Step 1

Concept

A number is even if its prime factorisation contains (2).

Step 2

Why this answer is correct

Only the first option contains (2), so it represents an even number.

Step 3

Exam Tip

To check evenness, look only for the factor (2). चरण 1: कोई संख्या सम तभी होती है जब उसमें (2) अभाज्य गुणनखंड हो। चरण 2: केवल पहले विकल्प में (2) मौजूद है, इसलिए वह सम संख्या है। चरण 3: समता जांचने के लिए पूरे गुणा की जरूरत नहीं, केवल (2) देखें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. \(2 \times 3^2 \times 5\).

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