x is a nonzero number. Is xy < 0?
(1) y is not negative.
(2) y is not positive.
OA C
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x is a nonzero number. Is xy < 0?
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Each Statement is clearly insufficient alone, since if y is nonzero, we'll get different answers to the question by making x positive or negative.
Using both statements, y must be zero, so xy = 0, and the answer to the question "is xy < 0?" is 'no', so the answer is C.
Using both statements, y must be zero, so xy = 0, and the answer to the question "is xy < 0?" is 'no', so the answer is C.
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