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how many different positive prime factors?

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by shibal » Thu Jul 16, 2009 4:28 am
14n/60 is equal to (2*7*n)/(2*2*3*5) therefore, to 14n/60 to be an integer, n has to have 2 3 and 5. so answer is 3.

hope it helps
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by rd85 » Thu Jul 16, 2009 5:05 am
Hey, thanks a lot again. I realised that I couldnt even interpret the question correctly. :oops:
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