Hard Mathematics Chapter 1: Real Numbers Class 10 Level 14

निम्न में से कौन-सा उदाहरण सिद्ध करता है कि दो अपरिमेय संख्याओं का गुणनफल परिमेय हो सकता है?

Which example proves that the product of two irrational numbers can be rational?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{2}\times\sqrt{2}=2\)

Step 1

Concept

\(\sqrt{2}\) is irrational.

Step 2

Why this answer is correct

Multiplying the two irrational numbers gives \(\sqrt{2}\times\sqrt{2}=2\), which is rational.

Step 3

Exam Tip

One valid counterexample is enough to disprove a universal statement. चरण 1: \(\sqrt{2}\) एक अपरिमेय संख्या है। चरण 2: दो समान अपरिमेय संख्याओं का गुणन \(\sqrt{2}\times\sqrt{2}=2\) देता है, जो परिमेय है। चरण 3: किसी सामान्य कथन को गलत दिखाने के लिए एक सही उदाहरण काफी होता है।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. \(\sqrt{2}\times\sqrt{2}=2\).

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