What is the average of the first four multiples of 6?
Answer & explanation
Correct answer: option 4
The first four multiples of 6 = 6, 12, 18, 24
Average of these numbers = $\frac{sum \;of \;numbers}{4}$
= $\frac{6+12+18+24}{4}$ = $\frac{60}{4}$ = 15