4, 8, 12 and so on.
7, 14, 21 and so on.
Common multiples include 28, 56, 84 and so on.
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It is 28
28 and 56
Any multiple of 28.
All nonzero numbers have an infinite number of multiples.
The common multiples of 7, 8, and 8 are the infinite set that includes any multiple of 56. The common multiples are thus 56, 112, 168, 224, 280, and so on.