Which of the following Venn diagram corresponds to the statement “All mothers are women” ($M$ is the set of all mothers, $W$ is the set of all women)

The proposition $p \rightarrow \sim( p \wedge \sim q )$ is equivalent to

The proposition $p \Rightarrow \;\sim (p\; \wedge \sim \,q)$ is

The Boolean expression $( p \Rightarrow q ) \wedge( q \Rightarrow \sim p )$ is equivalent to :

The Boolean Expression $\left( {p\;\wedge \sim q} \right)\;\;\vee \;q\;\;\vee \left( { \sim p\wedge q} \right)$ is equivalent to:

Contrapositive of the statement “If two numbers are not equal, then their squares are not equals” is