\(\sqrt{2}\) के प्रमाण में \(c^2=2d^2\) के बाद (c) सम सिद्ध करने में कौन-सा कथन छिपा हुआ है?
In the proof of \(\sqrt{2}\), which hidden statement is used to prove (c) even after \(c^2=2d^2\)?
Explanation opens after your attempt
Correct Answer
A. यदि (c) विषम हो तो \(c^2\) विषम होगाIf (c) is odd, then \(c^2\) is odd
Concept
The square of an odd number is odd. Therefore if \(c^2\) is even, (c) cannot be odd.
Why this answer is correct
The correct answer is A. यदि (c) विषम हो तो \(c^2\) विषम होगा / If (c) is odd, then \(c^2\) is odd. The square of an odd number is odd. Therefore if \(c^2\) is even, (c) cannot be odd.
Exam Tip
विषम का वर्ग विषम होता है। इसलिए \(c^2\) सम होने पर (c) विषम नहीं हो सकता।
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