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incomplete step MCQ Questions for Class 10

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

\(\sqrt{2}\) की सिद्धि में \(p^2=2q^2\) मिलने के बाद कौन सा कथन सही है लेकिन अभी प्रमाण पूरा नहीं करता?

In the proof of \(\sqrt{2}\), after getting \(p^2=2q^2\), which statement is correct but does not yet complete the proof?

Explanation opens after your attempt
Correct Answer

A. (p) सम है(p) is even

Step 1

Concept

From \(p^2=2q^2\), \(p^2\) and then (p) are proved even.

Step 2

Why this answer is correct

But to complete the proof, (q) must also be shown even.

Step 3

Exam Tip

Only then a contradiction arises through common factor (2). चरण 1: \(p^2=2q^2\) से \(p^2\) सम और फिर (p) सम सिद्ध होता है। चरण 2: लेकिन प्रमाण पूरा करने के लिए (q) भी सम दिखाना होगा। चरण 3: तभी दोनों में साझा गुणनखंड (2) से विरोधाभास बनेगा।

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