pastfinal - The University of Hong Kong Philosophy : PHIL...

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Philosophy : PHIL 1006 Elementary Logic Final Examination 20 December 2005 2:30 p.m. - 3:30 p.m. Student ID Number Answer all questions. You have one hour to complete this exam. Write your answers on this exam paper. 1. (20 marks) Circle ‘T’ if the statement is true. Circle ‘F’ if the statement is false. Assume that ϕ and ψ are SL WFFs. T F If ϕ entails ψ then ψ is consistent. T F If ϕ is a tautological conditional, then the antecedent of ϕ is inconsistent. T F If X is an inconsistent set of SL WFFs, then no member of X is a tautology. T F “( A ∨ ∼ ( B C ))” is not logically equivalent to “(( C B ) A )”. T F If the premises of an argument are all false, then that argument is not valid. T F No valid argument has a false conclusion. T F The following argument can be shown to be valid in SL: “If someone is clever, then Rex is clever. Someone is clever. So, Rex is clever.” T F “Aristotle said that” is a truth functional connective. T F A lexically ambiguous word has more then one meaning in a language. T
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pastfinal - The University of Hong Kong Philosophy : PHIL...

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