28, 28+1*70, 28+2*70, 28+3*70 and so on.
Multiples of 6 end in 6, 2, 8, 4 or 0.
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.
504 is the least common multiple of 7, 8 and 9. All numbers that are multiples of 504 are multiples of 7, 8 and 9 as well
The common multiples of 6, 7, and 8 are numbers that are divisible by all three of these numbers. To find the common multiples, we first list the multiples of each number: 6 (6, 12, 18, 24, 30, ...), 7 (7, 14, 21, 28, 35, ...), and 8 (8, 16, 24, 32, 40, ...). The common multiples of 6, 7, and 8 are the numbers that appear in all three lists, such as 24 and 48.
♥These are the 8 multiples of 6.♥6,12,18,24,30,36,42,48,...
56
56
6: 12,18,24,30,36,42,48,54,60 . . . 7: 14,21,28,35,42,49,56,63,70 . . . 8: 16,24,32,40,48,56,64,72,80 . . .
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 multiples of 2 between 7 and 15 are 8, 10, 12, and 14.
The common multiples are the infinite set of the multiples of the LCM of 7 and 8. Therefore, the common multiples of 7 and 8 are 56, 112, 168, 224, 280, and so on.
Multiples of 2 are even numbers. Even numbers end in 0, 2, 4, 6 or 8. If they didn't end in those numbers, they wouldn't be even numbers or multiples of 2.