LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
The first 5 multiples of 21 are: 21, 42, 63, 84, and 105.
There are infinitely many common multiples of 21 and 23. One such is 10626.
Two common multiples of 21 and 15 are 105 and 315.
The four multiples of seven are 7, 14, 21, and 28.
There are infinitely many multiples of 21 and it is impossible to list them all other than as 21*n where n is an integer.
there are 21 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.
42 of them.
Multiples 21: 1,3,7,21Multiples 49: 1,7,49
LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
The common multiples of 3 and 21 are 21, 42, 63 and so on.
The first five multiples of 21 are: 21, 42, 63, 84, 105.
The first 5 multiples of 21 are: 21, 42, 63, 84, and 105.
There are infinitely many common multiples of 21 and 23. One such is 10626.
You need at least two numbers to find a common multiple. Multiples of 21 in that range include 21, 42, 63 and 84
Factors of 21 = 1, 3, 7, 21 Multiples of 21: 21, 42, 63, 84, 105, 126, 147 +21 . . .