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

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Current Student
Joined: 28 Dec 2004
Posts: 3292
Location: New York City
Schools: Wharton'11 HBS'12
If A, then B. If B, then C. If C, then D. If all of the [#permalink]

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16 Oct 2008, 09:09
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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.

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Current Student
Joined: 28 Dec 2004
Posts: 3292
Location: New York City
Schools: Wharton'11 HBS'12

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16 Oct 2008, 09:10
I dont have an OA..but I think A is best
Director
Joined: 23 May 2008
Posts: 743

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16 Oct 2008, 09:20
this one was posted last week

11-t71528
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Joined: 17 Jun 2008
Posts: 1288

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16 Oct 2008, 09:37
fresinha12 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.

Funda is that : cause->effect

here when cause then effect but it does not mean effect cannot occur if cause is absent ,its just when cause ocurs effect must occur !!but reverse is not true !!!

hence consider the options !!
A-> D can occur due to some other cause than A too !!
B-> C can have any other cause too
C-> It D is absent for sure A is not there !!since whenever A happens D must occur,absence of D means absence of A

D-> whats E ??? OUT
E-> this is wrong D can be cause by some other reason too

IMO C

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Its Now Or Never

Re: CR LOGIC   [#permalink] 16 Oct 2008, 09:37
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# If A, then B. If B, then C. If C, then D. If all of the

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