number system

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number system

by nikhilagrawal » Tue Sep 09, 2008 4:56 pm
is x^4+y^4>z^4

1. x^2+y^2>Z^2
2. x+ y>Z

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by bharathaitha » Wed Sep 10, 2008 5:14 am
i will go with A

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by pseudononymous » Wed Sep 10, 2008 5:58 am
I think it's E.

(1) doesn't deal with values < 1 (try x=0.99, y=.99, z=1.4)
(2) doesn't deal with negatives or values < 1

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by niraj_a » Sat Sep 13, 2008 2:13 pm
i'll go with A too.

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by mals24 » Sat Sep 13, 2008 2:25 pm
This question has been solved before. Check the following link:

https://www.beatthegmat.com/gmat-prep-qu ... 17223.html