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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: 07 Jan 2008
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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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03 Feb 2008, 07:43
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7. 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.

My explanation is as follows:
If B, then C therefore if no B, no C

Can someone explain this?
Manager
Joined: 02 Jan 2008
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03 Feb 2008, 07:46
Refer here 11-t58503
Re: CR 1000CR Q7   [#permalink] 03 Feb 2008, 07:46
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