BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Is n an integer?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 171
Joined: Mon Jun 01, 2009 8:59 pm
Thanked: 8 times

by brick2009 » Sat Nov 21, 2009 8:51 pm
I agree with you ... answer is C


a.) 2n = Integer

2*1/2 = 1 (integer) ==> n not an integer

2* 2 = 4 (integer) ===> n is an integer

--insuff

b.) Same as above --insuff

together...is 2n and 3n is an integer.. -==> only if n is an integer..

Hence C

any other proof>???
Top
Post new topic Post Reply
• Page 1 of 1