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If x>y^2>z^4, which of the following is true? I.

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Senior Manager
Joined: 08 Aug 2005
Posts: 251

Kudos [?]: 67 [0], given: 0

If x>y^2>z^4, which of the following is true? I. [#permalink]

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26 Apr 2006, 02:27
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x>y^2>z^4, which of the following is true?

I. x>y>z
II. z>y>x
III. x>z>y

Kudos [?]: 67 [0], given: 0

VP
Joined: 29 Apr 2003
Posts: 1402

Kudos [?]: 30 [0], given: 0

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26 Apr 2006, 02:40
Answer is None. The question is kinda weird! Should it be, which one can be true?
1 cannot be true when x = 0.1, y =0.2, z=0.3

2. cannot be true when x=5, y=2, z=1

3. Works for numbers <0.1, -ve values of z and y. But if x =1, y =5 and z =4, it does not!

You should note that x CAN never be -ve! as x>y^2

By definition the min value of y^2 is 0, hence x>0!

Kudos [?]: 30 [0], given: 0

26 Apr 2006, 02:40
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If x>y^2>z^4, which of the following is true? I.

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