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# If (a b)c < 0, which of the following cannot be true?

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Joined: 01 Nov 2007
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If (a b)c < 0, which of the following cannot be true?  [#permalink]  02 Apr 2008, 14:12
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If (a – b)c < 0, which of the following cannot be true?

a < b
c < 0
|c| < 1
ac > bc
a2 – b2 > 0
SVP
Joined: 29 Aug 2007
Posts: 2493
Followers: 59

Kudos [?]: 577 [0], given: 19

Re: PS - Number properties [#permalink]  02 Apr 2008, 14:17
JCLEONES wrote:
If (a – b)c < 0, which of the following cannot be true?

a < b
c < 0
|c| < 1
ac > bc
a2 – b2 > 0

(a – b)c < 0
ac – bc < 0
ac < bc

so D. ac > bc
_________________
Re: PS - Number properties   [#permalink] 02 Apr 2008, 14:17
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