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Re: Is xy < 18 ? (1) x + y < 6 (2) x > 0 and y > 0 [#permalink]
1. X+Y<6, then e.g. -10+(-5) < 6 or 4+1 < 6 etc. Multiple solutions.

2. Doesnt provide any solution either

Combine, and X & Y must be positive. Hence XY<18 always. Sufficient. C
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Re: Is xy < 18 ? (1) x + y < 6 (2) x > 0 and y > 0 [#permalink]
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Math Expert
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