# Chapter 1 - Speaking Mathematically - Exercise Set 1.1: 3

a. between $a$ and $b$ b. real numbers $a$ and $b$; there exists a real number $c$

#### Work Step by Step

This is called the completeness of the real numbers.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.