A) \[(\tilde{\ }p\Rightarrow q)=\tilde{\ }q\Rightarrow \tilde{\ }p\]
B) \[(\tilde{\ }p\vee q)\equiv \vee p\vee \tilde{\ }q\]
C) \[\tilde{\ }(p\Rightarrow q)\equiv p\wedge \tilde{\ }q\]
D) \[\tilde{\ }(\,p\,\vee q)\equiv \tilde{\ }p\wedge \tilde{\ }q\]
Correct Answer: C
Solution :
[c] \[p\Rightarrow q\equiv \tilde{\ }p\vee q\therefore \tilde{\ }(p\Rightarrow q)\equiv p\wedge \tilde{\ }q.\]
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