# math

The least number of pens required to make complete sets of 20, 24, 30, are?

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3. 👁 140
1. This is the same as finding a Lowest Common Denominator

20 = 2*2*5
24 = 2*2*2*3
30 = 2*3*5

so we need: 2*2*2*3*5 or 120

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posted by Reiny

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