Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
If A, then B If B, then C. If C, then D. If all of the [#permalink]
24 Jun 2007, 07:21
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
HideShow timer Statistics
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.
Could someone please explain why C is the ans?
coz if not D, then it could be B or C and that means it could be A!