¬ (A ∨ q) ∧ (A ∧ q) is a ___________
A. Tautology
B. Contradiction
C. Contingency
D. None of the mentioned
Answer:B
¬ (A ∨ q) ∧ (A ∧ q) is a ___________
A. Tautology B. Contradiction C. Contingency D. None of the mentioned
Explanation: ≡ (¬A ∧ ¬q) ∧ (A ∧ q)