7
LCM(21, 49, 56) = 1176
It is 7!
1 and 7
1 and 7
This cannot be answered because the common multiples of any two or more numbers are infinite.
Any multiple of 1176
1 and 7
They are: 42, 49 and 56
There are four such numbers: 35, 42, 49 and 56.
42, 49, 56, 63
14, 21, 28, 35, 42, 49, 56, 63 . . .
7, 14, 21, 28, 35, 42, 49, 56, 63etc.