Expert Mathematics Chapter 1: Real Numbers Class 10 Level 18

\(\sqrt{2}\) के प्रमाण में \(p^2=2q^2\) से \(p^2\) सम है। यदि (p) विषम माना जाए, तो क्या समस्या होगी?

In the proof for \(\sqrt{2}\), \(p^2=2q^2\) shows \(p^2\) is even. If (p) is assumed odd, what problem occurs?

Explanation opens after your attempt
Correct Answer

A. विषम संख्या का वर्ग विषम होना चाहिएThe square of an odd number should be odd

Step 1

Concept

The square of an odd integer is always odd.

Step 2

Why this answer is correct

Here \(p^2\) is even, so (p) cannot be odd.

Step 3

Exam Tip

Thus (p) is proved even. चरण 1: विषम पूर्णांक का वर्ग हमेशा विषम होता है। चरण 2: यहाँ \(p^2\) सम है, इसलिए (p) विषम नहीं हो सकता। चरण 3: इस प्रकार (p) सम सिद्ध होता है।

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The correct answer is A. विषम संख्या का वर्ग विषम होना चाहिए / The square of an odd number should be odd.

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