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# If A, then B. If B, then C. If C, then D. If all of the

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Manager
Joined: 15 Nov 2006
Posts: 216

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Location: Ohio
If A, then B. If B, then C. If C, then D. If all of the [#permalink]

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28 Feb 2007, 16:32
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If A, then B.
If B, then C.
If C, then D.
If all of the statements above are true, which of the following must also be true?
(A) If D, then A.
(B) If not B, then not C.
(C) If not D, then not A.
(D) If D, then E.
(E) If not A, then not D.

OA is C... how???

Kudos [?]: 77 [0], given: 0

Senior Manager
Joined: 19 Jul 2006
Posts: 358

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01 Mar 2007, 04:38
C

if there is not D --> no C --->no B --> no A

Kudos [?]: 8 [0], given: 0

01 Mar 2007, 04:38
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