Question

Which of the following proposition is a contradiction? (a) (~p ∨ ~q) ∨ (p ∨ ~q) (b) (p → q) ∨ (p ∧ ~q) (c) (~p ∧ q) ∧ (~q) (d) (~p ∧ q) ∨ (~q)

Answer 1

Step-by-step explanation:

option b

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