4060, 8120, 12180.
20, 40, 60...
60,120, 180. 15 x 4 = 60 20 x 3 = 60 15 x 8 = 120 20 x 6= 120 15 x 12 = 180 20 x 9 = 180
10, 20 and 30.
20, 40, 60
1, 660, 5580
What are the first three common multiples of four and five
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
20, 40, 60
20, 40 and 60
100, 200, 300
20, 40, 60.