Gmat questions from GMAT PREP

Tani: 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

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