Smart answer:

Your search for What is rational number returned the following results:

any number that can be written as a fraction

A rational number is any number that can be written as a fraction.

Source:

a number that can be stated as the ratio of two different integers

Rational number: Rational number is a number that can be stated as the ratio of two different integers.

a number that is of the form p/q where p and q are integers and q is not equal to 0

Any number in the form of p/q where p and q are integers and q is not equal to 0 is a rational number.

Source:

a fraction where the numerator and denominator are integers

A rational number is a fraction where the numerator and denominator are integers.

that can be written in the form a/b, where a and b are integers

A rational number is a number that can be written in the form a/b, where a and b are integers.