Chapter 5 - Number Theory and the Real Number System - 5.3 The Rational Numbers - Exercise Set 5.3 - Page 286: 141

Any number that can be expressed as the quotient of two integers in the form \[\frac{p}{q}\] is known as a rational number. Here, \[p\]and \[q\]are two integers, where \[q\] cannot be equal to 0. Rational numbers can be of two types with terminating decimal as well as ones thatare nonterminating but repeating decimals.