The average of the first 8 multiples of 8 is

The correct answer is Option (3) → 36

The first 8 multiples of 8 are 8, 16, 24, ..., 64, which are 8 times the numbers 1 to 8. So their average is 8 times the average of 1 to 8.

• Average of 1 to 8 \(\displaystyle =\frac{1+8}{2}=4.5\) (first and last terms of an evenly spaced list)

• Average of the multiples \(=8\times4.5=36\)