140, 280, 420, 560, 700.
15 & 20 have an infinite number of Common Multiples; the first three are 60, 120 and 180.
5 10 15 20
20 pinkgal333:20, 40, 60 are all common multiples.
The common multiples of 5 and 10 are: 10, 20, 30,40, .......... the least common multiple is 10
20
They are the first five multiples of their lowest common multiple: 140, 280, 420, 560, 700.
The first five multiples of 4 are 4, 8, 12, 16 and 20. For them to be common, they need to be compared to another set of multiples.
Any multiples of 20.
The first five multiples of 5 are 5, 10, 15, 20 and 25. For them to be common, they need to be compared to another set of multiples.
20, 40, 60.
20, 40, 60
What are the first three common multiples of four and five
140, 280, 420, 560, 700
140, 280, 420, 560, 700
140, 280, 420, 560, 700
140, 280, 420, 560, 700.
They are: 140, 280, 420, 560, 700.