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Q3 - Properties Using properties of operators and other logical equivalences only (not truth tables), prove the following statements. 1. (p V q) V (pv-Q)

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Q3 - Properties Using properties of operators and other logical equivalences only (not truth tables), prove the following statements. 1. (p V q) V (pv-Q) is a tautology 2. ((p r)A(q r) (pV4)) r is a tautology 3. (pv qJA (-p/w) is a contradiction 4.-(q p) (p^ q^ s r) ^ p is a contradiction

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