MCQ
Which of the following statement is a contingency?
- ✓(q → p) ↔ (p ∧ q)
- B(~ p ∨ q) ∨ ~ (~ p ∨ q)
- C~ (q ∨ ~ p) ∨ ~ (~ p ∧ p)
- D(~ p ↔ q) ∨ (~ p → ~ q)
✓
Answer
Correct option: A.
(q → p) ↔ (p ∧ q)
A
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