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logical weakness MCQ Questions for Class 10

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Practice Questions

1 questions tagged with logical weakness.

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 कौन सा कथन प्रमाण की तार्किक कमजोरी दिखाता है?

Which statement shows a logical weakness in the proof of \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. (p) सम है, इसलिए (q) भी बिना किसी प्रतिस्थापन के सम है(p) is even, so (q) is also even without any substitution

Step 1

Concept

(p) being even does not automatically make (q) even.

Step 2

Why this answer is correct

To prove (q) even, (p=2k) must be substituted in the original equation.

Step 3

Exam Tip

Writing conclusions without support weakens the proof. चरण 1: (p) सम होने से अपने आप (q) सम नहीं होता। चरण 2: (q) को सम सिद्ध करने के लिए (p=2k) को मूल समीकरण में रखना पड़ता है। चरण 3: बिना आधार के निष्कर्ष लिखना प्रमाण को कमजोर बनाता है।

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