\( \sqrt{245} \) को सरल करने पर क्या मिलेगा?
What is obtained by simplifying \( \sqrt{245} \)?
Explanation opens after your attempt
B. \(7\sqrt{5}\)
Concept
Since \(245=49\times5\), \( \sqrt{245}=7\sqrt{5} \). Take the perfect square outside the radical.
Why this answer is correct
The correct answer is B. \(7\sqrt{5}\). Since \(245=49\times5\), \( \sqrt{245}=7\sqrt{5} \). Take the perfect square outside the radical.
Exam Tip
\(245=49\times5\) इसलिए \( \sqrt{245}=7\sqrt{5} \)। करणी में पूर्ण वर्ग को बाहर निकालें।
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