'Next premise' diaporamas de présentation

Prove that this argument is valid using valid argument forms (syllogisms)

Prove that this argument is valid using valid argument forms (syllogisms). Disjunctive Syllogism. no. Is there a ~ p ? . Is there a ~ ~ r ? . no. Move on to the next premise. Modus Ponens. Modus Tollens. Is there a p ? q ? . Is there a ~ s ? . yes . no.

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