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∼E ∨ ∼H

Question 226

Multiple Choice

∼E ∨ ∼H ∼E ∨ ∼H A) Invalid B) CD-valid. C) DD-valid. D) CD-invalid. E) MP-valid.

A) Invalid
B) CD-valid.
C) DD-valid.
D) CD-invalid.
E) MP-valid.

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