The common multiples of a set of numbers are the multiples of their lowest common multiple.
lcm(6, 7, 8) = 168 → the common multiples of {6, 7, 8} are:
168, 336, 504, 672, 840, 1008, 1176, 1344, 1512, 1680, 1848, 2016, 2184, 2352, 2520, 2688, 2856, 3024, 3192, 3360, 3528, 3696, 3864, 4032, 4200, 4368, 4536, 4704, 4872, 5040, 5208, 5376, 5544, 5712, 5880, 6048, 6216, 6384, 6552, 6720, 6888, 7056, 7224, 7392, 7560, 7728, 7896, 8064, 8232, 8400, 8568, 8736, 8904, 9072, 9240, 9408, 9576, 9744, 9912, 10080, 10248, 10416, 10584, 10752, 10920, 11088, 11256, 11424, 11592, 11760, 11928, 12096, 12264, 12432, 12600, 12768, 12936, 13104, 13272, 13440, 13608, 13776, 13944, 14112, 14280, 14448, 14616, 14784, 14952, 15120, 15288, 15456, 15624, 15792, 15960, 16128, 16296, 16464, 16632, 16800, ...
Pick any 3 you like.
There are not just three common multiples, but infinitely many. They are 168 and it multiples, so 1680 and 16800.
42 is the LCM of 3, 6 and 7. All multiples of 42 are multiples of 3, 6 and 7
Multiples of 6: 12, 18, 24 Multiples of 7: 14, 21, 28
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 3 and 7 are 21, 42, 63 and so on.
1,6,7 check
There are not just three common multiples, but infinitely many. They are 168 and it multiples, so 1680 and 16800.
42, 84 and 126
42, 84, 126
42 is the LCM of 3, 6 and 7. All multiples of 42 are multiples of 3, 6 and 7
Multiples of 6: 12, 18, 24 Multiples of 7: 14, 21, 28
The common multiples of 6, 7, and 8 are the multiples of its least common multiple, which is 168.The LCM of 6, 7, and 8 is 168.168, 336, 504 and so on.
You are stupid if you are asking this! go get some brains
The lowest common multiple of the two numbers is 42. All multiples of 42 are common multiples of 6 and 7. So the common multiples of 6 and 7 are 42, 84, 126, 168, 210, 252, 294, 336, and so on.
Odd multiples of 21.
If that's 1, 6 and 7, the answer is 42, 84 and 126. If that's 16 and 7, the answer is 112, 224 and 336.
It is: 42