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common pattern MCQ Questions for Class 10

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Practice Questions

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

कौन सा कथन \(\sqrt{2}\), \(\sqrt{3}\), और \(\sqrt{5}\) के प्रमाणों के लिए सही है?

Which statement is correct for the proofs of \(\sqrt{2}\), \(\sqrt{3}\), and \(\sqrt{5}\)?

Explanation opens after your attempt
Correct Answer

A. तीनों में पहले परिमेय मानकर सरलतम भिन्न लिखते हैंIn all three, we first assume rationality and write a lowest-form fraction

Step 1

Concept

All three proofs are based on contradiction.

Step 2

Why this answer is correct

At the start, the number is assumed rational and written as a lowest-form fraction.

Step 3

Exam Tip

Then a common factor gives a contradiction. चरण 1: तीनों प्रमाण विरोधाभास विधि पर आधारित हैं। चरण 2: शुरुआत में संख्या को परिमेय मानकर सरलतम भिन्न में लिखा जाता है। चरण 3: फिर साझा गुणनखंड से विरोधाभास दिखाया जाता है।

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