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## GMAT prep inequality 3

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jkelk Just gettin' started!
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GMAT prep inequality 3 Wed Mar 14, 2012 3:42 am
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• Lap #[LAPCOUNT] ([LAPTIME])
Hi

Thanks,
J
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Anurag@Gurome GMAT Instructor
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Wed Mar 14, 2012 6:42 am
jkelk wrote:
Hi

Thanks,
J
Is x^4 + y^4 > z^4 ?

(1) x² + y² > z²
If x = 1, y = 1, z = 0, then x^4 + y^4 > z^4
If x = 5, y = 6, z = 7, then x^4 + y^4 < z^4

(2) x + y > z
If x = 1, y = 1, z = 0, then x^4 + y^4 > z^4
If x = 5, y = 6, z = 7, then x^4 + y^4 < z^4

Combining (1) and (2), we can take the same examples as in statements 1 and 2 above; NOT sufficient.

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