Answer to Question #348808 in Discrete Mathematics for Donnel

Question

Determine whether each statement is trautology, contradiction or contingency

1. (P v~q) -> (q^~ r)

2. ~[r -> (q ^ r)]

3. (P v q) -> (q ^ r)

4. q -> ~ (q ^ r)

5. ~ [ t v (s ^ r)]

Answer 1

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