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Q.

Let p→q↔~q*p is a tautology, then p*~q  is equilvalent to

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a

p⇒~q

b

q⇒p

c

p⇒q

d

~q⇒p

answer is C.

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Detailed Solution

For p→q↔~q*p to be tautology, truth values of~q*p will be as shown in the table so~q*p=~~q∧p=q∨~p=~p∨q=p→qHence, p*~q=~p∧~q =~p∨q=p→q
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