Question

The square root of a number when multiplied by square root of another number gives 8 as the answer. The numbers could possibly be :

• A. 16 and 4
• B. 25 and 9
• C. 2 and 32
• D. 49 and 1

Answer 1

Answer: (A), (C)

The correct options are
A

16 and 4

C

2 and 32

Here, we clearly have to check the answer options since more than one solution is possible.

$\sqrt{16}\times \sqrt{4}$ = $\sqrt{64}$ = 8

$\sqrt{25}\times \sqrt{9}$ = $\sqrt{225}$ = 15

$\sqrt{2}\times \sqrt{32}$ = $\sqrt{64}$ = 8

$\sqrt{49}\times \sqrt{1}$ = $\sqrt{49}$ = 7

Hence $\sqrt{16}\times \sqrt{4}$ and $\sqrt{2}\times \sqrt{32}$ are the right options.