Chapter R, Problem 1RE

To determine

a number that is whole number but not a natural number.

Answer to Problem 1RE

Solution:

The number$0$is a whole number but not a natural number.

Given:

The condition that a number is a whole number but not a natural number.

Explanation of Solution

The term "natural number" is defined as the set of positive integers  $1,2,3,\mathrm{...}$ And the set of non-negative integers $0,1,2,3,\mathrm{...}$  are called as whole number.

  $\begin{array}{l}N=\left\{1,2,3,\mathrm{...}\right\}.\\ W=\left\{0,1,2,3,\mathrm{...}\right\}\end{array}$

Therefore, the number $0$ is a whole number but not a natural number.

Conclusion:

The number $0$ is a whole number but not a natural number.