A) Ram is not in Class X but Rashmi is in Class XII
B) Ram is not in Class X but Rashmi is in Class XII
C) Either Ram is not in Class X or Rashmi is not in class XII
D) None of the above
Correct Answer: D
Solution :
Let\[p:\]Ram is in class\[x,\,\,q:\]Rashmi is in class XII Given proposition is p v q. Its negation is\[\tilde{\ }(p\vee q)=\tilde{\ }p\wedge \tilde{\ }q\] Ram is not in class X and Rashmi is not in class XII.
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