The average of the first five multiples of 3 is-

A. 3

B. 9

C. 12

D. 15

Answer: Option B

Solution(By Examveda Team)

Average
$$\eqalign{ & = \frac{{3\left( {1 + 2 + 3 + 4 + 5} \right)}}{5} \cr & = \frac{{45}}{5} \cr & = 9 \cr} $$