Expert Mathematics Chapter 1: Real Numbers Class 10 Level 16

कौन-सा कथन \(\sqrt{5}\) के प्रमाण के अंत में सही विरोधाभास बताता है?

Which statement gives the correct contradiction at the end of the proof for \(\sqrt{5}\)?

Explanation opens after your attempt
Correct Answer

A. (p) और (q) सहअभाज्य हैं, फिर भी दोनों (5) से विभाज्य हैं(p) and (q) are coprime, yet both are divisible by (5)

Step 1

Concept

Coprime means there should be no common factor.

Step 2

Why this answer is correct

Both being divisible by (5) shows a common factor.

Step 3

Exam Tip

This contradiction proves \(\sqrt{5}\) irrational. चरण 1: सहअभाज्य होने का अर्थ है कि साझा गुणनखंड नहीं होना चाहिए। चरण 2: दोनों का (5) से विभाज्य होना साझा गुणनखंड दिखाता है। चरण 3: यही विरोधाभास \(\sqrt{5}\) को अपरिमेय सिद्ध करता है।

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The correct answer is A. (p) और (q) सहअभाज्य हैं, फिर भी दोनों (5) से विभाज्य हैं / (p) and (q) are coprime, yet both are divisible by (5).

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