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In addition to the 18 basic rules of implication and replacement, you must also use

either the conditional proof method and/or indirect proof method to prove arguments valid.

*Hint: you may need to use more than one conditional or indirect proof in the same proof.

(Q V B) ⊃T

(~Q V D) ⊃W                ∴T V W


B ⊃(G ∙ H)                    ∴(A ⊃B)⊃(A⊃B)

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