GMAT PREP DS

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bakosu: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Mon Sep 22, 2008 3:27 pm

by bakosu » Tue Jan 20, 2009 6:35 pm

If N is a positive integer, is the units of N equal to zero?

1. 14 and 35 are factors of N

2. N = (2^5)(3^2)(5^7)(7^6)

Can someone explain how 1. is suff?

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Source: Beat The GMAT — Problem Solving | Tue Jan 20, 2009 6:35 pm

amitabhprasad: Master | Next Rank: 500 Posts; Posts: 259; Joined: Thu Jan 18, 2007 8:30 pm; Thanked: 16 times

by amitabhprasad » Tue Jan 20, 2009 6:43 pm

I think it should be "D"
factors of 14 = 7*2
factors of 35 = 7*5
multiple of 2 &5 should have 0 as the units

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