Question

Which of the following are rational numbers and which are not?

$0$

Answer 1

A rational number is defined as a number that can be expressed in the form $\frac{\mathrm{p}}{\mathrm{q}}$ where $\mathrm{p}$ (numerator) and $\mathrm{q}$ (denominator) are integers$(\mathrm{q}\ne 0)$.

So, $0$ can be written as$\frac{0}{1}$, where $\mathrm{p}=0$ and$\mathrm{q}=1$.

Hence, $0$ is a Rational Number.