24, 48, 72
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.
8, 16, 24
First 3 multiples of: 3: 3, 6, 9 8: 8, 16, 24 9: 9, 18, 27 72, 144, 216
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.
They are the multiples of 3*8 = 24
4, 8, 12
8,16,24
72
It is 120.
The firt three multiples of 8 are 8, 16 and 24.
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.
4, 8 and 12 are the first 3 common multiples of 2 and 4