20, 40, 60
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∙ 11y ago30, 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
The anser to that Q is 30.
They are 30, 60 and 90.
20, 40 and 60
20, 40 and 60
30, 60, 90
40, 80, 120
30, 60, 90
30, 60, 90
The sum of the first 10 multiples of 3 is 165.