What are rational numbers? - Infinity Learn by Sri Chaitanya

A
A number of the form $\frac{p}{q}$ where $p$ and $q$ are any positive integers and $q \neq 0$ is called a rational number.
B
A number of the form $\frac{p}{q}$ where $p$ and $q$ are any negative integers and $q \neq 0$ is called a rational number.
C
A number of the form $\frac{p}{q}$ where $p$ and $q$ are integers is called a rational number.
D
A number of the form $\frac{p}{q}$ where $p$ and $q$ are any integers and $q \neq 0$ is called a rational number.

It is given to find out the definition of rational numbers.
Therefore, we know that a number of the form

\frac{p}{q}

where

p

and

q

are any integers and

q \neq 0

is called a rational number.
For example: Consider

\frac{2}{3}

here

2, 3

are co-primes so the number

\frac{2}{3}

is a rational number.
Therefore, option (4) is correct.

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