Rational Numbers

The set of rational numbers, represented by the symbol Q, is formed by all numbers that can be expressed as the ratio between two integers, ab, where b≠ 0. - 3, 13, 5, 3145 All four of these examples are rational numbers. Note that integers are also rational because they can always be written as fractions with a denominator of 1. -3 = -31, 5= 51 In other words, integer numbers is a subset of rational numbers.

Real numbers that are not rational are called irrational numbers.