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Question
Which of the following statement is a contingency?
Options
(~ p ∨ q) ∨ ~ (~ p ∨ q)
(q → p) ↔ (p ∧ q)
~ (q ∨ ~ p) ∨ ~ (~ p ∧ p)
(~ p ↔ q) ∨ (~ p → ~ q)
MCQ
Fill in the Blanks
Solution
(q → p) ↔ (p ∧ q)
Explanation:
| p | q | q → p | p ∧ q | (q → p) ↔ (p ∧ q) |
| T | T | T | T | T |
| T | F | T | F | F |
| F | T | F | F | T |
| F | F | T | F | F |
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Tautology, Contradiction, and Contingency
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