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Question Medium Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 18

अंतिम पंक्ति में कौन सा कथन \(\sqrt{2}\), \(\sqrt{3}\), या \(\sqrt{5}\) की सिद्धि को सही ढंग से पूरा करता है?

Which statement correctly completes the proof of \(\sqrt{2}\), \(\sqrt{3}\), or \(\sqrt{5}\) in the final line?

Explanation opens after your attempt
Correct Answer

A. यह हमारी परिमेय मान्यता के विरुद्ध है, अतः दी गई संख्या अपरिमेय हैThis contradicts our rational assumption, hence the given number is irrational

Step 1

Concept

In the proof, the rational assumption leads to an impossible common factor.

Step 2

Why this answer is correct

This contradicts the assumption.

Step 3

Exam Tip

So the final line should clearly state contradiction and irrationality. चरण 1: प्रमाण में परिमेय मान्यता से असंभव साझा गुणनखंड मिलता है। चरण 2: यह मान्यता के विरुद्ध है। चरण 3: इसलिए अंतिम पंक्ति में विरोधाभास और अपरिमेयता दोनों स्पष्ट लिखें।

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Question Medium Mathematics Chapter 1: Real Numbers 6: Proof of irrationality of √2, √3, √5 Class 10 Level 17

कौन सा विकल्प \(\sqrt{2}\) की सिद्धि का सही अंतिम वाक्य है?

Which option is the correct final sentence of the proof of \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. यह हमारी मान्यता के विपरीत है, अतः \(\sqrt{2}\) अपरिमेय हैThis contradicts our assumption, hence \(\sqrt{2}\) is irrational

Step 1

Concept

The rational assumption makes both (p) and (q) even.

Step 2

Why this answer is correct

This contradicts their being coprime.

Step 3

Exam Tip

So the final sentence should state both contradiction and irrationality. चरण 1: परिमेय मान्यता से (p) और (q) दोनों सम मिलते हैं। चरण 2: यह सहअभाज्य होने के विरुद्ध है। चरण 3: इसलिए अंतिम वाक्य में विरोधाभास और अपरिमेयता दोनों लिखें।

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