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Difficulty—
If \(x^2y=z^3,\) is \(z^3>0?\)
(1) \(xy^2>0\)
(2) \(yz > 0\)
Answer: E
Source: GMAT Prep
(1) \(xy^2>0\)
(2) \(yz > 0\)
Answer: E
Source: GMAT Prep
