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vinviper1
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PostPosted: Tue May 13, 2008 12:48 pm    Post subject: gmat prep num props Reply with quote
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akshatsingh
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PostPosted: Tue May 13, 2008 10:46 pm    Post subject: Reply with quote
1) Insufficient. Put w = -1 and 1.
2) w^2>1 means w can assume a negative and a positive value as well. Insufficient

1) and 2) together also aree unable to tell the sign of w

Answer seems E to me.
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