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Q: What are the common multiples of 21 and 49?

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

LCM(21, 49, 56) = 1176

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

147, 294, 441 and so on.

Multiples of seven include 7, 14, 21, 28, 35, 42, 49 and so on. For them to be common, they need to be compared to another set of multiples.

21, 28, 35, 42, 49

It is 7!

1 and 7

1 and 7

It is not possible to write all the common multiples of two or more numbers.However, we can write as many as we want but first of all we have to find L.C.M. of 49 and 14 and the answer is 98.Also, multiples of 98 are the common multiples of 49 and 14.It means that multiples of least common factor of two or more numbers are the common multiples of the numbers.So, first five common multiples are 98x1, 98x2, 98x3, 98x4 and 98x5.

They are: 21, 28, 35, 42 and 49

there are infinite amount of common multiples.