MCQ
$\sqrt{10}\times\sqrt{15}=?$
- A$\sqrt{25}$
- B$5\sqrt{6}$
- C$6\sqrt{5}$
- DNone of these.
✓
Answer
- $5\sqrt{6}$
Solution:
$\sqrt{10}\times\sqrt{15}=\sqrt{5\times2}\times\sqrt{5\times3}$
$=\sqrt{5}\times\sqrt{2}\times\sqrt{5}\times\sqrt{3}=5\sqrt{6}$
Hence, the correct answer is option (b).
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