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Can someone solve this for me? 5. (20 pt.) Use the laws of propositional logic to prove that the following compound propositions are tautologies a.

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5. (20 pt.) Use the laws of propositional logic to prove that the following compound propositions are tautologies a. (5 pt.) (pAq)- (q vr) c. (10 pt.) ((pv q) (p r) ^ (q r)) r

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