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If A, then B. If B, then C. If C, then D. If all of the [#permalink]
 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 answer was (B), but the actual answer is (C)
My explanation is as follows:
If B, then C therefore if no B, no C
Can someone explain this?
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