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

The contrapositive of the statement pattern $[p \lor (p \to q)] \to (p \land \sim q)$ is

If the truth value of the compound statement $[(p \leftrightarrow q) \land (q \to r) \land \sim r] \to (p \land \sim q)$ is false, then the truth values of the statement patterns $(p \to q) \leftrightarrow (q \to r)$ and $\sim (p \lor r) \to (q \land p)$ are, respectively ...

If the Boolean expression $(p \Rightarrow q) \Leftrightarrow (q * (\sim p))$ is a tautology,then the Boolean expression $p * (\sim q)$ is equivalent to

The negation of the statement $''96$ is divisible by $2$ and $3''$ is

Write the negation of the following statement and check whether the resulting statement is true:
There does not exist a quadrilateral which has all its sides equal.