A) \[r\]
B) \[s\wedge r\]
C) \[s\vee r\]
D) \[\tilde{\ }s\wedge \tilde{\ }r\]
Correct Answer: B
Solution :
\[\tilde{\ }(\sim s\vee (\tilde{\ }r\wedge s))\] \[s\wedge s(r\vee \tilde{\ }s)\] \[(s\wedge r)\vee (s\vee \tilde{\ }s)\] \[(s\wedge r)\vee (c)\] \[(s\wedge r)\]
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