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Q: What are the multiples of 3and 21?

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12 and any of its multiples

30

It is 30

Any multiple of 9.

15, 30, 45 and so on.

12, 24, 36

105

12, 24, 36, 48

21

21

All multiples of 12 are also multiples of 6 and they all can be written as the sum of nine numbers.

Multiples 21: 1,3,7,21Multiples 49: 1,7,49

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

the answer is 21, 43, 63, and 84 these are the multiples of 21 under 100.

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.

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 105. For them to be common, they need to be compared to another set of multiples.

By any multiples of 21

The first four multiples of 21: 21, 42, 63, 84

21 is the LCM since the numbers have no common factors except 1.

Factors of 21 = 1, 3, 7, 21 Multiples of 21: 21, 42, 63, 84, 105, 126, 147 +21 . . .

They are multiples of 63

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