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# What is the least common multiple of 15 and 30 and 20?

Updated: 8/21/2019

Wiki User

10y ago

To find LCM, prime factor each number

15 = 3 * 5

20 = 2 * 2 * 5

30 = 2 * 3 * 5

Now put enough of those factors together so you can include each number in your list.

You need 2 * 2 * 3 * 5, or 60, to do the job. so LCM is 60.
60

Wiki User

8y ago

Wiki User

9y ago

The least common multiple of the numbers 20, 30 and 15 is 60.

Wiki User

11y ago

The LCM is: 60

Wiki User

10y ago

60

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Q: What is the least common multiple of 15 and 30 and 20?
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