Question

Mark the correct answer in each of the following:
Which of the following is a contradiction?
(a) (p ∨ q) ⇔ (p ∧ q)
(b) (p ∨ q) ⇒ (p ∧ q)
(c) (p ⇒ q) ∨ (q ⇒ p)
(d) (~q) ∧ (p ∧ q)

Answer 1

Since (∼q) ∧ (p ∧ q)
States that both q and ~q are occurring
Simultaneously; which is a contradiction.

Hence, the correct answer is option D.