The average of first seven multiples of 3 is: Choose the correct option
A) 9
B) 16
C) 12
D) 8
E) 10
Explanation :   (3(1+2+3+4+5+6+7)/7   = 3x28/7   = 12   Answer : 12
<result>C</result>
The average of first seven multiples of 3 is: