90, 180, 270.
The two common multiples of three and five are: 15 and 30 ^-^
15, 30, and 45
They are 15, 150, 1500, for example.
15, 30, 45
Since the lowest common multiple of 3 and 5 is 15, the common multiples of 3 and 5 are the multiples of 15: 30, 45, 60, 75, 90, etc...
15, 30, and 45 are.
Multiples of 15 include 15, 30 and 45. For them to be common, they need to be compared to another set of multiples.
135, 270, 405
30 60 90
60, 120, 180
60, 120, 180
45, 90, 135