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Q: What are the five common multiples of 21?

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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.

They are multiples of 63

What are the first three common multiples of four and five

Any multiples of 20.

The first five multiples of 15 are 15, 30, 45, 60, 75. For them to be common, they need to be compared to another set of multiples.

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210, 420, 630, 840, 1050 Five common multiples. Only one can be least.

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

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.

The first 5 multiples of 21 are: 21, 42, 63, 84, and 105.

The first five multiples of 21 are: 21, 42, 63, 84, 105.

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

Two common multiples of 21 and 15 are 105 and 315.

They are multiples of 63

What are the first three common multiples of four and five

The common multiples of 3 and 21 are 21, 42, 63 and so on.

30, 60, 90, 120, 150

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