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∼S ∨ ∼T

Question 242

Multiple Choice

∼S ∨ ∼T ∼S ∨ ∼T A) MP-valid. B) DS-valid. C) MT-valid. D) DA-invalid. E) Invalid.


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

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