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Construct indirect derivations no nesting will be necessary to show the validity of the listed arguments.(Using...

Construct indirect derivations no nesting will be necessary to show the validity of the listed arguments.(Using MT, MP, DNE, DNI or any other rules)

1. (¬Q → R), (S → ¬R), (¬S → Q) ⊢ ¬¬Q

2. ((P → Q) → R), (S → (P → Q)), (¬S → R) ⊢ ¬¬R

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