A) \[\tilde{\ }p\ \wedge \tilde{\ }q\]
B) \[\tilde{\ }p\ \vee \tilde{\ }q\]
C) \[(p\ \wedge \tilde{\ }q)\vee (\tilde{\ }p\ \wedge q)\]
D) None of these
Correct Answer: C
Solution :
\[\tilde{\ }(p\Leftrightarrow q)=(p\ \wedge \tilde{\ }q)\vee (q\ \wedge \tilde{\ }p)\].
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