The LCM is 20
20, 40, 60
20 is the smallest common multiple of 4, 5, and 10, and thus the first. Thus, the first three common multiples of 4, 5, and 10 are 20, 40 and 60.
20, 40, 60
20, 40 and 60
20, 40, 60
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
The first three multiples of 4 are 4, 8 and 12. For them to be common, they need to be compared to another set of multiples.
They are: 40 80 and 120
20, 40, 60
40, 80, 120
20, 40, and 60
60, 120, 180
20, 40, 60