Essay
determine whether the given argument is valid or invalid. If it is valid, provide a derivation of the conclusion from the premises. If it is invalid, provide a counterexample.
-1. ∼(M N)
2. ∼M ⊃ (O ⊃ P)
3. O ≡ P / O
Correct Answer:
Verified
Correct Answer:
Verified
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