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

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New post 24 Aug 2008, 13:43
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A
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C
D
E

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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.

Please explain your answer.
Thanks
Senior Manager
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Joined: 31 Jul 2008
Posts: 289
Re: CR if A then B... [#permalink]

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New post 24 Aug 2008, 18:35
C

whts the OA ?
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Re: CR if A then B... [#permalink]

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New post 24 Aug 2008, 19:01
elmagnifico wrote:
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.

Please explain your answer.
Thanks


C too.

If C then D is sure. If not D they there was no C. So accordingly, if not C then there was no B. and so on..........

(A) If D, then A: Maynot be true because D could have resulted not because of C but because of X or Y or Z.
(B) If not B, then not C: Also not true C could result because of K/L/M.
(C) If not D, then not A: Yes it is. If not D they there were no C. So accordingly, if not C then there were no B and so on..........
(D) If D, then E: nobody knows.
(E) If not A, then not D: Not true because other than A could cause B or C's occurance. If any thing other than A causes to occure B and the same applies to C, then D could result because not of A.
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Re: CR if A then B...   [#permalink] 24 Aug 2008, 19:01
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