Question

find mean of the first 3 composite numbers

Answer 1

The first three composite no.s are : 4,6,8

Mean = Sum / ( No. of elements ) = ( 4+6+8 ) / ( 3 ) = 6

Answer 2

4,6,8
4+6+8 = 18.
18 / 3 (total numbers there)
= 6.
6 multiplied by 3 = 18.