is 0 a rational number?\nyes\nno

Brief Explanations:

A rational number is defined as a number that can be expressed as the quotient or fraction $\frac{p}{q}$ of two integers, where $q\neq0$. Since $0$ can be written as $\frac{0}{1}$ (where $0$ and $1$ are integers and $1\neq0$), it is a rational number.

Answer:

yes