Question

find the sum of first 8 multiples of 3

Answer 1

First 8 multiples of 3 are :
3 6 9 12 15 18 21 24

Sum of these numbers is
3 +6 +9 +12 +15 +18 +21 +24=108

Answer 2

3 6 9 12 15 18 21 24

3+6=9 and onwards