इनमें से कौन-सा वर्गमूल परिमेय है?

Which of these square roots is rational?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

B. \(\sqrt{49}\)

Step 1

Concept

\(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

Step 2

Why this answer is correct

The correct answer is B. \(\sqrt{49}\). \(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

Step 3

Exam Tip

\(\sqrt{49}=7\) इसलिए यह परिमेय है। पूर्ण वर्ग का वर्गमूल हमेशा परिमेय पूर्णांक होता है।

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Mathematics Answer, Explanation and Revision Hints

इनमें से कौन-सा वर्गमूल परिमेय है? / Which of these square roots is rational?

Correct Answer: B. \(\sqrt{49}\). Explanation: \(\sqrt{49}=7\) इसलिए यह परिमेय है। पूर्ण वर्ग का वर्गमूल हमेशा परिमेय पूर्णांक होता है। / \(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

What exam hint can help solve this Mathematics question?

\(\sqrt{49}=7\) इसलिए यह परिमेय है। पूर्ण वर्ग का वर्गमूल हमेशा परिमेय पूर्णांक होता है।