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PHIL1012 Introductory Logic Problem Set 1. (4 marks) Use a truth table to determine whether the following argument is valid. If the argument is not valid, give a counterexample. (A→ ¬B) (C → A) ————— ¬(B ∧ C) p.1 (of 2) 2. (4 marks) Use a truth table to determine whether the following argument is valid. If the argument is not valid, give a counterexample. (B → ¬A) (A ∨ ¬C) ————— ¬(B ∧ ¬C) p.2 (of 2)