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MCQ (Single Correct Answer)
GATE CSE 2008
P and Q are two propositions. Which of the following logical expressions are equivalent?
I. P∨∼QP∨∼QII. ∼(∼P∧Q)∼(∼P∧Q)III. (P∧Q)∨(P∧∼Q)∨(∼P∧∼Q)(P∧Q)∨(P∧∼Q)∨(∼P∧∼Q)IV. (P∧Q)∨(P∧∼Q)∨(∼P∧Q)(P∧Q)∨(P∧∼Q)∨(∼P∧Q)
(A) Only I and II(B) Only I, II and III(C) Only I, II and IV(D) All of I, II, III and IV