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Which of the following is equivalent to pq?

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By Expert Faculty of Sri Chaitanya
a
(~p∨q)∨(p∨q)
b
(p∧q)∨(~p∧~q)
c
(p∨q)∧(p∨~q)
d
(p∧q)∨(p∨q)

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detailed solution

Correct option is B

Use p↔q≡(p→q)∧(q→p)           ≡(~p∨q)∧(~q∨p)           ≡(p∧q)∨(~p∧~q)


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The contrapositive of inverse of p→∼q is

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