gmat prep q

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gmat prep q

by smallsorrow » Sat Sep 20, 2008 1:21 am
For every pos. integer n, the function h(n) is deifined to be the product of all even int´s from 2 to n, incl.. if p is the smallest prime factor of h(100)+1, then p is:
1. between 2 and 10
2. between 10 and 20
3, between 20 and 30
4. between 30 and 40
5. greater than 40

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by Ian Stewart » Sat Sep 20, 2008 5:54 am
Probably the most asked problem on this forum. I posted a solution here:

www.beatthegmat.com/gmat-prep-q-t14339.html

but there are many others around- search for "h(n)" to find other explanations.

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by smallsorrow » Sat Sep 20, 2008 9:13 am
Thank you... it´s a real mean problem... !!