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Prove ((P ∨ ¬Q) ∧ (¬P ∨ R)) → (Q → R) Hint: this starts with...

Prove ((P ∨ ¬Q) ∧ (¬P ∨ R)) → (Q → R)

Hint: this starts with the usual setup for an implication, then repeatedly uses disjunctive syllogism.

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