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If w > x^2 >= y which of the following must be true?

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If w > x^2 >= y which of the following must be true?  [#permalink] New post 25 Jun 2006, 17:11
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If w > x^2 >= y which of the following must be true?
I. x >= 0
II. w > | x |
III. w > y >= x


(A) None
(B) II only
(C) I and II only
(D) I and III only
(E) I, II and III
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 [#permalink] New post 25 Jun 2006, 17:34
(A)

I. x >= 0 .. not sufficient. x can be -ve/+ve
II. w > |x| , may not be true for fractional values of x
III. not sufficient either.
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 [#permalink] New post 26 Jun 2006, 19:44
agree with A
remember the fractional values for II.
  [#permalink] 26 Jun 2006, 19:44
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If w > x^2 >= y which of the following must be true?

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