Which of the following statements is $NOT$ logically equivalent to $\left( {p \to \sim p} \right) \to \left( {p \to q} \right)$?
$\left( {p \to p} \right) \to \left( {p \to \sim p} \right)$
$q \to \left( {p \to q} \right)$
$\left( {q \to \sim p} \right) \to \left( {q \to p} \right)$
none of these
The statement $p \to ( q \to p)$ is equivalent to
Dual of $(x \vee y) \wedge (x \vee 1) = x \vee (x \wedge y) \vee y$ is
$\sim (p \vee q) \vee (\sim p \wedge q)$ is logically equivalent to
The contrapositive of the statement "If I reach the station in time, then I will catch the train" is