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Q: What are the first three common multiples of 7 20 35?

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First three common multiples of 15 and 20 would be: 60,120,180

15 & 20 have an infinite number of Common Multiples; the first three are 60, 120 and 180.

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

They are: 20, 40 and 60

20, 40, 60

10, 20, 30

20, 40, and 60.

20, 40, 60

10, 20, 30

They are: 180, 360 and 540

100, 200, 300

20, 40 and 60

20, 40, 60.

10, 20, 30.

10, 20 and 30

10, 20, 30.

20 30 40

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

60, 120 and 180

80, 160, 240