कौन सा गुणनफल परिमेय संख्या देता है?
Which product gives a rational number?
Explanation opens after your attempt
Correct Answer
A. \( \sqrt{3}\times\sqrt{27} \)
Concept
\( \sqrt{3}\times\sqrt{27}=\sqrt{81}=9 \), which is rational. The other products do not become square roots of perfect squares.
Why this answer is correct
The correct answer is A. \( \sqrt{3}\times\sqrt{27} \). \( \sqrt{3}\times\sqrt{27}=\sqrt{81}=9 \), which is rational. The other products do not become square roots of perfect squares.
Exam Tip
\( \sqrt{3}\times\sqrt{27}=\sqrt{81}=9 \) परिमेय है। बाकी गुणनफल पूर्ण वर्ग के वर्गमूल में नहीं बदलते।
Login to save your score, XP, coins and progress.