14 (P Q) R (R R) P Use conditional proof or indirect proof and the eighteen rules of inference to establish the truth of the following tautologies

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14   (P  Q)  R    (R  R)  P  Use conditional proof or indirect proof and the eighteen rules of inference to establish the truth of the following tautologies

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Question: 14. [(P Q) R] [(R R) P] Use conditional proof or indirect proof and the eighteen rules of inference to

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