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Q: What are multiples of 21 and 9?

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There are infinitely many multiples of 9 and 21 so it is impossible to list them. One of their multiples is 9*21 = 189.

The common multiples of 9 and 21 are 63, 126, 189 and so on.

The common multiples of 9 and 21 are 63, 126, 189 and so on.

6363

9

multiples of 63

The multiples of 9, 14 and 21 are infinite, starting with: 126, 252, 378, 504, 630, 756, 882 +126 . . .

63, 126, 189 and so on.

63 and its multiples

126

Just 63

The LCM is 63.

14 and 21

The LCM is 63

They are: 63, 126.

63.

3, 6, 9, 12, 15, 18, and 21 are.

Any pair of numbers has an infinite set of common multiples. The lowest common multiple of 9 and 21 is 63 and the others are multiples of this, e.g. 63, 126, 189, 252, 315, ...

Multiples of 3 are 3, 6, 9 and so on. Multiples of 7 are 7, 14, 21 and so on. The common multiples of 3 and 7 include 21, 42, 63 and so on.

3, 6, 9, 12, 15, 18, 21.

3, 6, 9, 12, 15, 18, 21

63

63, 126 and 189

Just 63.

It is: 126