Here follows a set of twenty elementary valid arguments. They are valid because each of them is

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Here follows a set of twenty elementary valid arguments. They are valid because each of them is exactly in the form of one of the nine elementary valid argument forms. For each of them, state the rule of inference by which its conclusion follows from its premise or premises.


(P1): (F ≡ G) ⊃ ~ (G ⊃ ~ F)
(P2): ~ (G ⋅ ~ F) ⊃ (G ⊃ F)
∴ (F ≡ G) ⊃ (G ⊃ F)

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Introduction To Logic

ISBN: 9781138500860

15th Edition

Authors: Irving M. Copi, Carl Cohen, Victor Rodych

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