7, 14, 21
1,2,3
6,12,18
12, 24, and 36
9, 18, 27
9, 18, 27
3, 6, 9
2, 4, 6
The common multiples of any two or more numbers are the multiples of their lowest common multiple.lcm(3, 4, 5) = 60→ first three common multiples are:60 x 1 = 6060 x 2 = 12060 x 3 = 18060, 120, 180
They are 36*1, 36*2 and 36*3.
To find the answer, multiply whatever the number is by 1, 2 and 3.
1, 660, 5580
The first 3 COMMON multiples of 17 will depend upon the OTHER NUMBER(S) with which 17 has common multiples. However, they will be regularly spaced within the multiples of 17.eg the first 3 COMMON multiples of:1 and 17 are 17, 34, 51;2 and 17 are: 34, 68, 102;5 and 17 are: 85, 170, 255;17 and 34 are: 34, 68, 102etc.