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Q)

Which of the following are tautologies and which are contradictions?

(1)(pq)(pq)

(2)(p(p))((q)p)

(3)q(p(q))

(A) All are contradictions.(B)All are tautologies.(C)Only Statement (2) is a contradiction, (1) and (3) are tautologies.(D)Only Statement (1) is a tautology, (2) and (3) are contradictions.

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