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Question

(pq) is logically equivalent to

A
pq
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B
qp
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C
(pq)
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D
(qp)
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Solution

The correct option is D (qp)
¬(qp)¬(p¬q) Implication Law
¬p¬¬q De Morgan’s Law
¬pq Double Negation Law
(¬pq) is logically equivalent to ¬(qp)

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