Is {$x : x$ is a natural numbers, $x \lt 5$ and $x \gt 1\}$ a null set?

Question

$\begin{array}{1 1}(A)\;\text{Null set}\\(B)\;\text{Not a null set}\end{array} $

Answer 1

There is no natural numbers such that x < 5 and as well as x > 1

$\therefore$ It is a null set.

Hence (A) is the correct answer.