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    Mathematics
  3. Study Set
    A Concise Introduction to Logic
  4. Exam
    Exam 6: Propositional Logic
  5. Question
    E ⊃ ∼A
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E ⊃ ∼A

Question 325

Question 325

Multiple Choice

E ⊃ ∼A E ⊃ ∼A   A)  Invalid. B)  DD-invalid. C)  HS-valid. D)  CD-valid. E)  DS-valid.


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

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