Question

Give one example each to the following statements.
A number which is natural number, whole number, integer and rational number.

Answer 1

Natural numbers are all numbers $1,2,3,4\dots$ They are the numbers you usually count and they will continue on into infinity.

Whole numbers are all natural numbers including $0$ e.g.$0,1,2,3,4\dots$

Integers include all whole numbers and their negative counterpart e.g. $\dots -4,-3,-2,-1,0,1,2,3,4,\dots$

All integers belong to rational numbers. A rational number is a number$\frac{a}{b}$ where $b\ne 0$

Where $a$ and $b$ are both integers.

Here $4$ is a natural number, whole number, integer and rational number as $4=\frac{4}{1}$

Thus, all positive numbers fulfil the above statement.