test_2_august - University of Toronto PHL 245 Modern...

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University of Toronto PHL 245 Modern Symbolic Logic Test 2 Instructor Sorin Bangu August 4th, 2005 -- LM 159 45 minutes (8:10 – 8:55 PM) Worth 30% of the final grade. Answer all questions. Rules provided. Staple this page with your answers. Write your name and st. # on every page. St. # First name: Last name: 1 ) Show that this argument is valid in SD+: ( 15 marks) 2 ) Symbolize and show that the following set of sentences is inconsistent in SD+: ( 15 marks) If motorcycling is dangerous, then sailboating is also dangerous, and if sailboating is dangerous then parachuting is dangerous. Motorcycling is dangerous but parachuting is not. 3 ) Show that the following is a theorem in SD: (A B) [~B 15 marks) 4 ) Given the symbolization key below, symbolize the following sentences in PL:
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test_2_august - University of Toronto PHL 245 Modern...

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