List the first three common multiples of 2 and 7 and 8?
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.