Negation of “Ram is in Class $X$ or Rashmi is in Class $XII$” is
Ram is not in class $X$ but Ram is in class $XII$
Ram is not in class $X$ but Rashmi is not in class $XII$
Either Ram is not in class $X$ or Ram is not in class $XII$
None of these
The negation of the expression $q \vee((\sim q) \wedge p)$ is equivalent to
The conditional $(p \wedge q) ==> p$ is
The contrapositive of the statement "If you will work, you will earn money" is ..... .
The negation of the statement $(p \vee q)^{\wedge}(q \vee(\sim r))$ is
The statement among the following that is a tautology is