30, 60, 90
30, 60, 90
Because 9 is a multiple of 3, the common multiples of 3 and 9 are the multiples of 9. The first 10 common multiples of 3 and 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81, and 90.
30, 60, 90
They are 30, 60 and 90.
20, 40, 60
20, 40 and 60
The anser to that Q is 30.
20, 40 and 60
40, 80, 120
30, 60, 90
30, 60, 90
The sum of the first 10 multiples of 3 is 165.