Phil201Ex2-Ans-Fall07 - Phil 201 Fall 2007 Exam#2 ANSWERS...

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Phil 201 Fall 2007 Exam #2 Silverstein ANSWERS 104 Total Points I. (2 points each) 1) F 2) T 3) T 4) T 5) F 6) T 7) F 8) F 9) T II. (5 points each) 10) C‡‘B 11) ‘(D A), (D“A)‡‘(D‡A), ‘D A 12) ‘B˙‘E 13) ‘(A‡D)˙E 3 pts for "not both"; 2 pts for correct overall form, with correct antecedent and consequent 14) ‘(D“A)“C, (‘D‡‘A)“C, ‘C˙‘(D“A) 3 pts for "neither…nor"; 3 pts for "unless" 15) B˙‘(E A), (E A)˙‘B 3 pts for the "if and only if" half; 2 pts for correct overall form 16) (‘E˙‘B)‡(E˙C) 2 pts for each half, 1 pt for correct overall form OK to do as two separate sentences 17) ‘[(A ‘E)“B]˙(‘D˙‘C), [‘(A ‘E)‡‘B]˙(‘D˙‘C) 2 pts for each half, 1 pt for correct overall form III. (7 points) Ù 18) B G B G B˙‘G T T T F F T F F T T truth-functionally F T F T F INCONSISTENT F F T T T IV. (7 points) Ù Ù Ù 19) A J N ‘[A‡(J N)] ‘(A˙N) ‘(N“‘J) T T T F T T F T F T F T T F T F F T F T F F truth-functionally T F T T F F F T F T T VALID T F F F T T T
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