The dual of the statement pattern $\sim p \wedge (q \vee t)$ is (where $t$ is a tautology and $c$ is a contradiction).

Which of the following statements is a tautology?

Consider the following statements:
$p: 2$ is an even prime number.
$q: \text{If } z_1 = 2 - i, z_2 = -2 + i \text{ where } i = \sqrt{-1}, \text{ then } \operatorname{Im}\left[\frac{1}{z_1 \bar{z}_2}\right] = -\frac{1}{5}$.
$r: \tan(-945^{\circ}) = -1$.
Which of the following has a truth value of True?

The inverse of the statement "If the surface area increases,then the pressure decreases." is

If $ab = 0$,write the contrapositive of the statement $(a = 0 \text{ or } b = 0)$.

The negation of the statement "If $I$ become a teacher,then $I$ will open a school" is: