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:

The principal solutions of $\text{cosec}(\theta) = -2$ are...

The equation of a line passing through the point of the intersection of the lines $x - y + 1 = 0$ and $2x + 3y - 8 = 0$ and having x intercept $3$ is