Numbers that can be expressed as an exact ratio of two integers.

Any number that can be expressed in the form a/b, where a and b are integers and b ¹ 0, for example 3/4, 2/1, or 11/3. Every integer is a rational number, since it can be expressed in the form a/b, for example, 5 = 5/1. Rational numbers may be expressed as fractional or decimal numbers, for example 3/4 or .75. Finite decimals, repeating decimals, and mixed numbers all represent rational numbers.

set of numbers formed by the ratio (i.e., fraction) of two Integers where zero in the denominator is not permitted (division by zero is undefined); frequently represented as Q = {a/b | a ∈ I, b ∈ I, b

Any number that can be written as one integer divided by another

Numbers that can be expressed as the quotient of two integers; for example, 7/3, 5/11, -5/13, 7 = 7/1.