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Which of the following is true?

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By Expert Faculty of Sri Chaitanya
a
p∧~p≡t
b
p∨~p≡f
c
p→q≡q→p
d
p→q≡∼q→∼p
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detailed solution

Correct option is D

~q→∼p is contrapositive of p→q and both convey the same meaning.


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