The LCM of 4 and 15 is 60.

So which of those numbers is a factor of 60?

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- Aug 13th 2011, 05:37 AM #1

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- Aug 13th 2011, 07:06 AM #6
## Re: SAT question

LCM and GCF

Prime factors are the easiest way, the link above explains it better than I can

- Aug 13th 2011, 07:10 AM #7

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