The lowest common multiple is 18. The first four common multiples are thus the first four multiples of 18 and are: 18, 36, 54 and 72.
First, find the LCM. Example: 30 and 42 Factor them. 2 x 3 x 5 = 30 2 x 3 x 7 = 42 Combine the factors, eliminating duplicates. 2 x 3 x 5 x 7 = 210, the LCM Double it to find the next common multiple, 420. Triple it to find the next common multiple, 630. Quadruple it to find the next common multiple, 840.
You need at least two numbers to find an LCM.
The least common multiple of four, twenty eight, and twenty is 140.
28, 56, 84, 112, 140.
It is not possible to give a sensible answer to this question. A common multiple refers to a multiple that is COMMON to two or more numbers. You have only one number in the question!
Prime factorization.
Twenty-four is a common multiple of 6 and 8.
Any multiple of 24.
The common multiples of four start with the lowest common multiple. One times four is four. From there multiply four by two to get another multiple, eight. Other common multiples include 12,16,24,36,40,44, and 48.
The lowest common multiple (LCM) is: 306
Any multiple of 28.