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Question Expert Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 16

किस कथन से पता चलता है कि \(\sqrt{2}\) पूर्णांक नहीं हो सकता?

Which statement shows that \(\sqrt{2}\) cannot be an integer?

Explanation opens after your attempt
Correct Answer

A. ऐसा कोई पूर्णांक नहीं है जिसका वर्ग (2) होThere is no integer whose square is (2)

Step 1

Concept

Squares of integers are like (0,1,4,9).

Step 2

Why this answer is correct

No integer has square (2).

Step 3

Exam Tip

Still, to prove irrationality, the full rational-form proof is needed. चरण 1: पूर्णांकों के वर्ग (0,1,4,9) जैसे होते हैं। चरण 2: कोई पूर्णांक ऐसा नहीं जिसका वर्ग (2) हो। चरण 3: फिर भी अपरिमेयता सिद्ध करने के लिए परिमेय रूप वाला पूरा प्रमाण चाहिए।

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