666
How about 12
30
84
30
126
The multiples are 6,12,18,24,30,36. It is 36.
Eleven has no such factor.
This is the lowest common multiple which is the smallest number greater than 0 which is a multiple of all the numbers. for example the lowest common multiple (lcm) of 4 and 6 is 12 as 12 is the first (smallest) number greater than 0 that is a multiple of both 4 and 6.
the answer is 54 because 6*9 equals 54
They are: 18+24+30 = 72
1
3 times 4 or 5 or 6 or 7 or 8: take your pick.