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Propositional Logic: Tautologies, Contradictions, and Contingencies
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Which of the following is a tautology?
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A
p ∨ ~p
💡 Explanation:
A tautology is a propositional formula that is always true, regardless of the truth values of its component propositions. In this case, the propositional formula "p ∨ ~p" is always true because it states that either "p" is true or "not p" is true, which is always the case.