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Question Easy Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 18

कौन सा विकल्प \(\sqrt{2}\) की अपरिमेयता का सही छोटा कारण है?

Which option is the correct short reason for the irrationality of \(\sqrt{2}\)?

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Correct Answer

A. परिमेय मानने पर सरलतम भिन्न के अंश और हर दोनों सम हो जाते हैंAssuming rational makes numerator and denominator of a lowest-form fraction both even

Step 1

Concept

Assume \(\sqrt{2}\) rational and write it in lowest form.

Step 2

Why this answer is correct

The proof gives both numerator and denominator even.

Step 3

Exam Tip

This contradicts lowest form, so \(\sqrt{2}\) is irrational. चरण 1: \(\sqrt{2}\) को परिमेय मानकर सरलतम भिन्न में लिखते हैं। चरण 2: प्रमाण से अंश और हर दोनों सम मिलते हैं। चरण 3: यह सरलतम रूप से विरोध करता है, इसलिए \(\sqrt{2}\) अपरिमेय है।

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