Question

What is the value of $\sqrt{99}\times \sqrt{396}$?

• A. 208
• B. 198
• C. 254
• D. None of these

Answer 1

The correct option is B 198

$\sqrt{a}\times \sqrt{b}=\sqrt{a\times b}$

$⟹\sqrt{99}\times \sqrt{396}=\sqrt{99\times 396}$

$=\sqrt{3\times 3\times 11\times 3\times 3\times 2\times 2\times 11}$
$=3\times 3\times 2\times 11=198$