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2. Prove each of propositions are tautology. a) p (PV) b) (p) 3. Prove (p+q) and p q expressions are logically equivalent 4. Prove pqve

2. Prove each of propositions are tautology. a) p (PV) b) (p) 3. Prove (p+q) and p q expressions are logically equivalent 4. Prove pqve p q expressions are logically equivalent

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