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Which of the following is logically equivalent to ~(~pq)?

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a
p∧q
b
p∧~q
c
~p∧q
d
~p∧~q

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detailed solution

Correct option is D

We know that p→q≡∼p∨q   ∴ ~p→q≡p∨q∴ ~(p→q)≡∼(p∨q)                     ≡∼p∧~q

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