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∼N ∨ a

Question 313

Multiple Choice

∼N ∨ A ∼N ∨ A A) DS-valid. B) HS-valid. C) MT-valid. D) DA-invalid. E) MP-valid.

A) DS-valid.
B) HS-valid.
C) MT-valid.
D) DA-invalid.
E) MP-valid.

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