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Question Number 178452 by cortano1 last updated on 16/Oct/22

         show that      ((p∧q)⇒r)⇒((p∧∼r)⇒∼q)     is tautology

showthat((pq)r)((pr)⇒∼q)istautology

Answered by Spillover last updated on 17/Oct/22

Commented by cortano1 last updated on 17/Oct/22

nice

nice

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