lcm(2, 7) = 14 → first 3 common multiples are: 14, 28, 42; lcm(2, 8) = 8 → first 3 common multiples are: 8, 16, 24; lcm(7, 8) = 56 → first 3 common multiples are: 56, 112, 168; lcm(2, 7, 8) = 56 → first 3 common multiples are: 56, 112, 168.
The common multiples of an set of numbers are the multiples of their lowest common multiple. lcm(7, 8, 9) = 504 → the first 3 common multiples of 7, 8, 9 are 504, 1008, 1512.
8,16,24
4, 8 and 12 are the first 3 common multiples of 2 and 4
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
24 and 48
24, 48, 72
24, 48, 72
They are: 24 48 and 72
40, 80, 120
They are: 24 48 and 72
88, 176, 264