Conditional and Indirect Proofs

Can someone please help me?


Complete the following proofs using the Conditional Proof method.

1) 1. ~(P ∙ ~Q)
2. ~P → ~R
3. (R ∙ Q) → S / R → S



2) 1. (P ∙ Q) v (R ∙ S)
2. R → L / ~P → L
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Complete the following proofs using the Indirect Proof method.

3) 1. A → B
2. A → C
3. ~B v ~C / ~A
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4) 1. M v (O ∙ ~N)
2. ~M v ~N / ~N
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