Are all whole numbers also natural numbers?
$$\textbf{Step -1: Comparing natural numbers and whole numbers.}$$
$$\text{Whole numbers include all positive integers and 0}$$
$$\text{Natural numbers include all positive integers}$$
$$\therefore\text{All whole numbers aren't natural numbers because 0 is a whole number but not a natural number.}$$
$$\textbf{Hence , all whole numbers are not natural numbers.}$$