Introduction:
Rational Number: The number ‘$\mathit{r}$’ is called a rational number , if it can be written in the form $\frac{\mathit{p}}{\mathit{q}}$ , where $\mathit{p}$ and $\mathit{q}$ are integers and $\mathit{q}$ ≠ 0 . Rational number includes natural numbers, whole numbers and integers.
Co-prime: The numbers $\mathit{p}$ and $\mathit{q}$ are co-prime if $\mathit{p}$ and $\mathit{q}$ have no common factors other than 1 .
Natural numbers: Numbers from 1,2,3 and so on is called natural number.
Whole Number: If we add 0 in the natural number , it is called whole number.
Important Note:
Every integer $\mathit{m}$ can be expressed in the form $\frac{\mathit{m}}{1}$ , so every integer is a rational number.
But every rational number is not an integer.