Hard Mathematics Chapter 1: Real Numbers Class 10 Level 14

निम्न में से कौन-सा कथन \(\sqrt{2}\) की अपरिमेयता के प्रमाण में प्रयोग होता है?

Which statement is used in proving the irrationality of \(\sqrt{2}\)?

Explanation opens after your attempt
Correct Answer

A. यदि \(a^2\) सम है, तो (a) सम हैIf \(a^2\) is even, then (a) is even

Step 1

Concept

In the proof for \(\sqrt{2}\), we assume \(\sqrt{2}=\frac{a}{b}\).

Step 2

Why this answer is correct

This gives \(a^2=2b^2\), so \(a^2\) is even and hence (a) is even.

Step 3

Exam Tip

This parity argument leads to a contradiction. चरण 1: \(\sqrt{2}\) के प्रमाण में मानते हैं कि \(\sqrt{2}=\frac{a}{b}\) है। चरण 2: इससे \(a^2=2b^2\) मिलता है, इसलिए \(a^2\) सम है और (a) सम होगा। चरण 3: समता वाला यह तर्क विरोध तक पहुँचाता है।

FAQs

Mathematics Question FAQs

What is the correct answer to this Mathematics MCQ?

The correct answer is A. यदि \(a^2\) सम है, तो (a) सम है / If \(a^2\) is even, then (a) is even.

Where can I practice more Mathematics questions?

Open the subject page or level quiz links on this page to practice more active Mathematics MCQs with answers and explanations.

Related Mathematics Questions

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.