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

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If x>y^2>z^4, which of the following is true? I. [#permalink]  26 Apr 2006, 01:27
If x>y^2>z^4, which of the following is true?

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