The number of non-empty subsets of the set $\{1, 2, 3, 4\}$ is

If $A = \{1, 2, 3, 4, 5\}$,then the number of proper subsets of $A$ is

Are the following pair of sets equal? Give reasons.
$A = \{ 2, 3 \}, \quad B = \{ x : x \text{ is a solution of } x^2 + 5x + 6 = 0 \}$

Examine whether the following statement is true or false:
$\{x : x \text{ is an even natural number less than } 6\} \subset \{x : x \text{ is a natural number which divides } 36\}$

Consider the experiment of rolling a die. Let $A$ be the event 'getting a prime number' and $B$ be the event 'getting an odd number'. Write the sets representing the events $A$ and $B$.

State whether the following set is finite or infinite:
The set of lines which are parallel to the $x$-axis.