Chapter 5 - Number Theory and the Real Number System - 5.3 The Rational Numbers - Exercise Set 5.3 - Page 287: 151

The density of rational numbers is an idea thatsays that it is always possible to find a rational number between any two distinct rational numbers. If \[\frac{a}{b}\] and \[\frac{c}{d}\] are two distinct rational numbers and \[\frac{a}{b}