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Contrapositive of p(qr) is logically equivalent to 

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By Expert Faculty of Sri Chaitanya
a
p→(q→r)
b
(q→r)→∼p
c
p∨q→r
d
(q→r)→p
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detailed solution

Correct option is A

Contrapositive of  p→(q→r) is ~(q→r)→∼p≡~[~(q→r)]∨(~p)≡(q→r)∨(~p)≡(~p)∨(q→r)≡p→(q→r)


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The contrapositive of inverse of p→∼q is

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