140, 280, 420
140, 280, 420
2 and 4 are common multiples of the numbers 14 and 20
15 & 20 have an infinite number of Common Multiples; the first three are 60, 120 and 180.
140
10, 20, 30 The common multiples of 5 and 10 are multiples of their lowest common multiple. The lcm of 5 and 10, is 10. Thus the first three common multiples are 10, 20, 30.
10, 20, 30
40, 80 & 120.
140, 280, 420
140, 280, 420
10, 20, 30
20, 40, and 60.
20, 40, 60