Let the operations $*, \odot \in \{\wedge, \vee\}$. If $(p * q) \odot (p \odot \sim q)$ is a tautology,then the ordered pair $(*, \odot)$ is:

The contrapositive of the statement "If it is raining,then $I$ will not come" is

The negation of the statement pattern $p \vee (q \rightarrow \sim r)$ is

Among the statements:
$(S1) \quad (( p \vee q )$ $\Rightarrow r ) \Leftrightarrow ( p$ $\Rightarrow r )$
$(S2) \quad (( p \vee q )$ $\Rightarrow r ) \Leftrightarrow (( p$ $\Rightarrow r ) \vee ( q$ $\Rightarrow r ))$

The negation of the Boolean expression $p \vee (\sim p \wedge q)$ is equivalent to

If $p$ and $q$ are true statements and $r$ is a false statement,then which of the following is correct?