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

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Q: What are three common multiples of 15 and 20?
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What are three pair of multiples that have 5 as their greatest common factor?

10 and 15 15 and 20 20 and 25


What are the first three common multiples of 10 15 and 20?

60, 120 and 180


What are the common multiples of 9 15 and 20?

The common multiples of 9, 15, and 20 are an infinite set of multiples of their least common multiple, which is 180. so the common multiples of 9, 15, and 20 are 180, 360, 540, 720, 900, 1080, 1260, 1440, 1620, 1800, and so on.


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The multiples of 20 are 20, 40, 60, 80, 100, 120... The multiples of 30 are 30, 60, 90, 120, 150... The multiples of 15 are 15, 30, 45, 60, 75, 90, 105, 120, 135... The common multiples of 20, 30, and 15 are 60, 120, 180, 240...


What is the common multiples of 15 and 20?

LCD= 60


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

Ans: 15, 30 and 45 Prime factorization of 3 and 15 3: 3 15: 3 x 5 15, 30 and 45. Hi My names Bob


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