Expert Mathematics Chapter 1: Real Numbers Class 10 Level 18

\(\sqrt{2}\) के प्रमाण में कौन-सा कथन \(p^2\) से (p) तक सही ढंग से पहुँचाता है?

Which statement correctly moves from \(p^2\) to (p) in the proof for \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. यदि \(p^2\) सम है, तो (p) भी सम हैIf \(p^2\) is even, then (p) is also even

Step 1

Concept

The square of an odd integer is odd.

Step 2

Why this answer is correct

So if \(p^2\) is even, (p) cannot be odd and must be even.

Step 3

Exam Tip

This parity rule is a key step in the proof. चरण 1: किसी विषम पूर्णांक का वर्ग विषम होता है। चरण 2: इसलिए यदि \(p^2\) सम है, तो (p) विषम नहीं हो सकता और (p) सम होगा। चरण 3: यह सम-विषम नियम प्रमाण में मुख्य कदम है।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. यदि \(p^2\) सम है, तो (p) भी सम है / If \(p^2\) is even, then (p) is also even.

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