there are infinite amount of common multiples.
Wiki User
∙ 2010-11-04 02:03:44The common multiples of 9 and 21 are 63, 126, 189 and so on.
18
it is 18. 18 is a multiple of all three numbers. multiples of 3: 3,6,9,12,15,18... multiples of 6: 6,12,18... multiples of 9: 9, 18...18
21 and 28
There an infinite number of common multiples of 2, 3 and 18. The least of these is 18.
LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
18, yes.21, no.
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.
The common multiples of 18 and 24 are 72 and 144.
All multiples of 36 are multiples of 18.
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.
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
The common multiples of 3 and 21 are 21, 42, 63 and so on.
Multiply 21 and 11 to get a common multiple. Since 21 and 11 have no common factors, that also happens to be the least common multiple.All other common multiples are multiples of this least common multiple.
The multiples of 3 are 3, 6, 9, 12, 15, 18, 21 and so on. The first six multiples of 6 are 6, 12, 18, 24, 30, 36, 42 and so on. Common multiples include all the multiples of 6.