Medium Mathematics Chapter 1: Real Numbers Class 10 Level 17

यदि कोई विद्यार्थी \(\sqrt{2}\) को अपरिमेय सिद्ध करते समय केवल \(p^2=2q^2\) तक लिखकर रुक जाता है, तो प्रमाण क्यों अधूरा है?

If a student stops at only \(p^2=2q^2\) while proving \(\sqrt{2}\) irrational, why is the proof incomplete?

Explanation opens after your attempt
Correct Answer

A. क्योंकि अभी (p) और (q) दोनों सम दिखाकर विरोधाभास लिखना बाकी हैBecause it still remains to show both (p) and (q) even and write contradiction

Step 1

Concept

\(p^2=2q^2\) is only a middle step.

Step 2

Why this answer is correct

From it, both (p) and (q) must be shown even.

Step 3

Exam Tip

The proof is not complete without writing the coprime contradiction. चरण 1: \(p^2=2q^2\) केवल मध्य चरण है। चरण 2: इससे (p) और (q) दोनों सम दिखाने होते हैं। चरण 3: सहअभाज्य शर्त से विरोधाभास लिखे बिना प्रमाण पूरा नहीं होता।

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The correct answer is A. क्योंकि अभी (p) और (q) दोनों सम दिखाकर विरोधाभास लिखना बाकी है / Because it still remains to show both (p) and (q) even and write contradiction.

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