A) \[\tilde{\ }r\Rightarrow (p\vee q)\]
B) \[r\Rightarrow (p\vee q)\]
C) \[\tilde{\ }r\Rightarrow (\tilde{\ }p\wedge \tilde{\ }q)\]
D) \[p\Rightarrow (q\vee r)\]
Correct Answer: C
Solution :
Given,\[(p\vee q)\Rightarrow r\] \[\equiv \tilde{\ }r\Rightarrow \tilde{\ }(p\vee q)\] \[\equiv \tilde{\ }r\Rightarrow (\tilde{\ }p\wedge \tilde{\ }q)\]
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