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(∼H ⊃ K) • (H ⊃ ∼T)

question 306

Multiple Choice

(∼H ⊃ K) • (H ⊃ ∼T) (∼H ⊃ K)  • (H ⊃ ∼T)    A)  Invalid. B)  CD-valid. C)  DD-valid. D)  DA-invalid. E)  MP-valid.


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