Which of the following is an open statement?

If the Boolean expression $(p \wedge q) \circledast (p \otimes q)$ is a tautology,then $\circledast$ and $\otimes$ are respectively given by

Negation of the statement: $\sqrt{5}$ is an integer or $5$ is irrational is

For the simple statements $p, q$,and $r$,$p \rightarrow (q \vee r)$ is logically equivalent to

The given circuit is equivalent to:

The last column in the truth table of the statement pattern $[p \rightarrow (q \wedge \sim p)] \vee [(p \vee \sim q) \wedge p]$ is