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If ab > cd and a, b, c and d are all greater than zero,

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Senior Manager
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Joined: 21 Jun 2006
Posts: 289
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Kudos [?]: 18 [0], given: 0

If ab > cd and a, b, c and d are all greater than zero, [#permalink] New post 25 Jun 2007, 18:22
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A
B
C
D
E

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If ab > cd and a, b, c and d are all greater than zero, which of the following CANNOT be true?


1. c > b
2. d > a
3. b/c<d>d/b
5. (cd)^2 < (ab)^2
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Joined: 13 Mar 2007
Posts: 546
Schools: MIT Sloan
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Kudos [?]: 20 [0], given: 0

 [#permalink] New post 25 Jun 2007, 19:07
didn check for 3) but eliminated others ..so shud be 3 !
  [#permalink] 25 Jun 2007, 19:07
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A, B, C, D are non zero numbers such that a/b = c/d and a/d bmwhype2 5 06 Nov 2007, 09:54
3 For non-zero integers a, b, c and d, is ab/cd positive? mm007 10 20 Dec 2006, 02:25
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If ab > cd and a, b, c and d are all greater than zero,

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