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Q: What are common multiples of 9 21?

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

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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, ...

126

The LCM is 63.

The LCM is 63

63.

Their lowest common multiple is 63.

63

It is: 126

63, 126, 189

315

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

63, 126, 189

itzz 63

63, 126, 189.

63, 126, 189

Just 63.

They are: 63, 126, 189.

There is an infinite number of common multiples for 9 and 21. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).

LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.

If that's 9, 14 and 21, the first three common multiples are 126, 252 and 378.

Multiples of 21 include 21, 42, 63, 84 and so on. For them to be common, they need to be compared to another set of multiples.

there are infinite amount of common multiples.

Common multiples of 9 and 10 are all of the multiples of 90.

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