If the power set of a set has $32$ elements, then how many elements does the set have? Name the set which is not a subset of any of the given sets.

Cardinal number of a set can never be negative.

If two sets have same cardinal number, then they are equal sets.

Two singleton sets are always equal.

The set of whole numbers is a finite set.

We can find the smallest number of the set of negative integers.

We can find the largest number of the set of negative integers.

If set $A$ and set $B$ are equal, then $n\left(A\right)=n\left(B\right)$. 

The set of natural numbers less than $50$ is a finite set.