Easy Mathematics Chapter 1: Real Numbers Class 10 Level 9

संख्या 784 का अभाज्य गुणनखंडन कौन सा है?

Which is the prime factorisation of 784?

Explanation opens after your attempt
Correct Answer

A. \(2^4\times7^2\)

Step 1

Concept

Recognise \(784=28^2\).

Step 2

Why this answer is correct

Since \(28=2^2\times7\), \(784=2^4\times7^2\).

Step 3

Exam Tip

In a square number, exponents may be even, so check the powers. चरण 1: \(784=28^2\) पहचाना जा सकता है। चरण 2: \(28=2^2\times7\), इसलिए \(784=2^4\times7^2\)। चरण 3: वर्ग संख्या में घातें सम हो सकती हैं, इसलिए घातों को जांचें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. \(2^4\times7^2\).

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