Question:
A number which can be expressed as $\frac{p}{q}$, where $p$ and $q$ are integers and $q \neq 0$ is
(a) natural number
(b) whole number
(c) integer
(d) rational number
Solution:
(d) A number which can be expressed as $\frac{p}{q}$, where $p$ and $q$ are integers and $q \neq 0$ is a rational number.