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decimal-vs-proof MCQ Questions for Class 10

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Practice Questions

1 questions tagged with decimal-vs-proof.

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

किस कथन से स्पष्ट होता है कि \(\sqrt{2}\) की अपरिमेयता का प्रमाण दशमलव पर आधारित नहीं है?

Which statement shows that the proof of irrationality of \(\sqrt{2}\) is not based on decimals?

Explanation opens after your attempt
Correct Answer

A. प्रमाण परिमेय मान्यता और सहअभाज्यता के विरोधाभास पर आधारित हैThe proof is based on rational assumption and contradiction of coprimality

Step 1

Concept

A decimal approximation of \(\sqrt{2}\) does not prove irrationality.

Step 2

Why this answer is correct

The real proof assumes \(\sqrt{2}=\frac{p}{q}\) and derives a contradiction.

Step 3

Exam Tip

In exams, give priority to logical proof. चरण 1: \(\sqrt{2}\) का दशमलव अनुमान प्रमाण नहीं देता। चरण 2: असली प्रमाण में \(\sqrt{2}=\frac{p}{q}\) मानकर विरोधाभास निकाला जाता है। चरण 3: परीक्षा में तार्किक प्रमाण को प्राथमिकता दें।

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