A) \[\tilde{\ }(p\wedge q)\Rightarrow (r\wedge s)\]
B) \[\tilde{\ }(p\ \wedge \tilde{\ }q)\Rightarrow (r\wedge s)\]
C) \[\tilde{\ }(p\ \wedge q)\ \Rightarrow (r\vee s)\]
D) None of these
Correct Answer: A
Solution :
Correct result is \[(\tilde{\ }p\ \vee \tilde{\ }q)\Rightarrow (r\wedge s)\] So, \[\tilde{\ }(p\wedge q)\Rightarrow (r\wedge s)\].
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