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Q: What are the first three common multiples of 15 and 20?

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Since 3 is a factor of 15, the first three common multiples of 3 and 15 are 15, 30, and 45.

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

15, 30 and 45

15, 30, 45

15, 30, 45

15, 30, and 45 are.

135, 270, 405

15, 30, 45

60, 120, 180

30 60 90

45, 90, 135

60, 120, 180

60, 120 and 180

105, 210, 315

105, 210, 315

105, 210, 315

They are: 60, 120 and 180

30, 60, 90.

Multiply 35 by the first three counting numbers. That will give you the first three multiples. To be common, they need to be compared to another set of multiples. If you meant 3 and 5, the LCM is 15. Multiplying 15 by 2 and 3 will give you the others.

The first five multiples of 15 are 15, 30, 45, 60, 75. For them to be common, they need to be compared to another set of multiples.

15, 30, and 45

The two common multiples of three and five are: 15 and 30 ^-^

15, 30, 45

the first two common multiples of 15,27 are 135,270

They are 15, 150, 1500, for example.