If $A = \{1, 2, 3, 4, 5\}$, then which of the following statements is not true?

If $-1 + \sqrt{-3} = r e^{i\theta}$, then the value of $\theta$ is

There are $5$ boys and $3$ girls seated in a row for a photograph. The number of ways in which a photograph can be taken if the girls occupy only odd places is...

The value of the expression $\tan(x - 9\pi)$ is equal to: