Data suff - equations - Gmat prep query

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Is xy>0

1) x-y > -2

2) x-2y < -6

Ans: C i.e. both togather are suff. Pls guide me to understand the approach to such type of questions.

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Re: Data suff - equations - Gmat prep query

by Vemuri » Sun May 17, 2009 1:36 am
[email protected] wrote:Is xy>0

1) x-y > -2

2) x-2y < -6

Ans: C i.e. both togather are suff. Pls guide me to understand the approach to such type of questions.
IMO E