Hard Mathematics Chapter 1: Real Numbers Class 10 Level 17

\(\sqrt{5}\) को अपरिमेय सिद्ध करने में कौन सा अंतिम कारण सबसे सटीक है?

Which final reason is most accurate in proving \(\sqrt{5}\) irrational?

Explanation opens after your attempt
Correct Answer

A. परिमेय मानने पर सरलतम भिन्न के अंश और हर दोनों (5) से विभाज्य मिलते हैंAssuming rational makes both numerator and denominator of the lowest-form fraction divisible by (5)

Step 1

Concept

Assume \(\sqrt{5}\) rational and write it in lowest-form fraction.

Step 2

Why this answer is correct

The proof shows both numerator and denominator divisible by (5).

Step 3

Exam Tip

This contradicts the coprime condition, so \(\sqrt{5}\) is irrational. चरण 1: \(\sqrt{5}\) को परिमेय मानकर सरलतम भिन्न में लिखते हैं। चरण 2: प्रमाण से अंश और हर दोनों (5) से विभाज्य मिलते हैं। चरण 3: यह सहअभाज्य शर्त से विरोधाभास है, इसलिए \(\sqrt{5}\) अपरिमेय है।

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The correct answer is A. परिमेय मानने पर सरलतम भिन्न के अंश और हर दोनों (5) से विभाज्य मिलते हैं / Assuming rational makes both numerator and denominator of the lowest-form fraction divisible by (5).

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