gmat prep

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by varunrajwade » Thu Jun 26, 2008 3:22 pm
Q is are Z,f >0?

I. zf>0 This condition is satisfied if z & f >0 pr if both are <0>0
Assume Z=99, F = -1, Z+F >0 but f<0>0 or if both are <0>0 hence both >0. Answer is c.