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which is greater

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Manager
Manager
avatar
Joined: 13 Aug 2009
Posts: 153
WE 1: 4 years in IT
Followers: 1

Kudos [?]: 90 [0], given: 7

which is greater [#permalink] New post 07 Apr 2010, 07:44
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (02:30) wrong based on 1 sessions
[Reveal] Spoiler:
OA-E

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Manager
Manager
avatar
Joined: 29 Oct 2009
Posts: 202
Concentration: General Management, Sustainability
WE: Consulting (Computer Software)
Followers: 2

Kudos [?]: 60 [0], given: 12

Re: which is greater [#permalink] New post 07 Apr 2010, 09:34
I tried with sample numbers.
y^2 is always +ve and as X is greater, it should be +ve.
For the caseI \(x>y>z\)Consider x=5, y=2, z=1=> satisfies \(x>y^2>z^4\)
case I could be true.

For case II, \(z>y>x\), consider fractions x=1/4,
y=1/3,z=1/2
=> satisfies \(x>y^2>z^4\) => 1/4 > 1/9 > 1/16
case II could be true

For caseIII, \(x>z>y\), consider x=26, y=-5 and z=-2. Here z >y
=> satisfies \(x>y^2>z^4\) => 26>25>16
Case III could be true.

So answer is E.
Please post the OA
Re: which is greater   [#permalink] 07 Apr 2010, 09:34
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