Question

State the dual of the following statement by applying the principle of duality.

p ∨ (q ∨ r) ≡ ~[(p ∧ q) ∨ (r ∨ s)]

Answer 1

p ∧ (q ∧ r) ≡ ~[(p ∨ q) ∧ (r ∧ s)]