Common multiples of 9 and 10 are all of the multiples of 90.
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90 is the least common multiple of 9 and 10
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.
The first three multiples of 3 are 3, 6, 9 The first three multiples of 9 are 9, 18, 27 As the lowest common multiples of 3 and 9 is 9, the common multiples of 3 and 9 are the multiples of 9, thus: The first three common multiples of 3 and 9 are 9, 18, 27
The common multiples of 9 and 21 are 63, 126, 189 and so on.
The least common multiples of the number 6 and 9 is 3.