1)

If $x \times y = x + y + \sqrt{xy}$, the value of $6 \times 24$ is :


A) 42

B) 43

C) 24

D) 25

Answer:

Option A

Explanation:

$6 \times 24 = 6 + 24 +  \sqrt{6 \times 4}$

$= 30 + \sqrt{144} = 30 + 12 = 42.$