Gmat questions from GMAT PREP

This topic has expert replies
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Wed Dec 01, 2010 10:37 pm

Gmat questions from GMAT PREP

by gana » Mon Jan 24, 2011 5:57 pm
Is w greater than 1?
1. w+2>0
2. w^2>0

User avatar
Legendary Member
Posts: 1255
Joined: Fri Nov 07, 2008 2:08 pm
Location: St. Louis
Thanked: 312 times
Followed by:90 members

by Tani » Tue Jan 25, 2011 11:28 am
The second clue is useless. It simply tells us that the variable squared is positive, but all squares (except 0) are positive. So all we know is that w isn't zero.

The first clue doesn't help either. W could be 500 or -1.
Tani Wolff