Easy Mathematics Chapter 1: Real Numbers Class 10 Level 4

संख्या 81 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 81?

Explanation opens after your attempt
Correct Answer

A. \(3^4\)

Step 1

Concept

Write 81 as \(9\times9\).

Step 2

Why this answer is correct

Each 9 is \(3^2\), so \(81=3^4\).

Step 3

Exam Tip

9 is composite, so \(9^2\) is not prime factorisation. चरण 1: 81 को \(9\times9\) लिखें। चरण 2: हर 9 को \(3^2\) लिखने पर \(81=3^4\) मिलता है। चरण 3: 9 संयुक्त है, इसलिए \(9^2\) अभाज्य गुणनखंडन नहीं है।

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