336, 672, 1008
42
The Least Common Multiple of 21 and 30 is 210.
Their lowest common multiple is 63.
The LCM is: 21
Any pair of numbers has an infinite set of common multiples. The lowest common multiple of 9 and 21 is 63 and the others are multiples of this, e.g. 63, 126, 189, 252, 315, ...
336, 672, 1008
The lowest common multiple of 3 and 8 is 24.List the multiples of 3 and 8. The lowest multiple they have in common is the least common multiple.3: 3, 6, 9, 12, 15, 18, 21, 24, 27...8: 8, 16, 24...
LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
There is an infinite number of common multiples for 21 and 15. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
The lowest common multiple of 21 and 34 is 714. Therefore, the common multiples of 21 and 34 are the multiples of 714. The first five are: 1 x 714 = 714 2 x 714 = 1428 3 x 714 = 2142 4 x 714 = 2856 5 x 714 = 3570
There are none. The lowest multiple of 21 is 21.
there are infinite amount of common multiples.