# Rational Numbers

Rational numbers are integers plus fractions.

In other words number is rational, if it can be written as fraction p/q (we know that every integer m can be written as fraction m/1).

So, -4, -10, 0, 2, 23, -4/5, -3 2/5, -15/7, 2/3, 9/4, 5 10/11 are all rational numbers.

Thus, rational numbers include

Set of rational numbers, i.e. group of rational numbers, is denoted by QQ.