Is x = 0? (1) x^2 y = x^3 y (2) x^2 / y = x^3 y : GMAT Data Sufficiency (DS)
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# Is x = 0? (1) x^2 y = x^3 y (2) x^2 / y = x^3 y

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Is x = 0? (1) x^2 y = x^3 y (2) x^2 / y = x^3 y [#permalink]

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07 Feb 2012, 15:23
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Is x = 0?

(1) x^2 y = x^3 y
(2) x^2 / y = x^3 y
[Reveal] Spoiler: OA

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Re: IS x = 0 [#permalink]

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07 Feb 2012, 15:30
Is x = 0?

(1) x^2 y = x^3 y --> x^2y(x-1)=0 --> x=0, y=0 or x=1. Not sufficient.

(2) x^2 / y= x^3 y --> x^2(xy-1/y) --> x=0 or xy^2=1. Not sufficient.

(1)+(2) It's possible that x=0 but it's also possible that x=1 (and y=1 for example). Not sufficient.

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Re: Is x = 0? (1) x^2 y = x^3 y (2) x^2 / y = x^3 y [#permalink]

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17 Sep 2015, 11:47
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Re: Is x = 0? (1) x^2 y = x^3 y (2) x^2 / y = x^3 y   [#permalink] 17 Sep 2015, 11:47
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