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    Mathematics
  3. Study Set
    A Concise Introduction to Logic
  4. Exam
    Exam 6: Propositional Logic
  5. Question
    S ? ?T\(\frac { \mathrm { S } } { \sim T }\)
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S ? ?T S∼T\frac { \mathrm { S } } { \sim T }∼TS​

Question 141

Question 141

Multiple Choice

S ? ?T S∼T\frac { \mathrm { S } } { \sim T }∼TS​


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

Correct Answer:

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