College Algebra Chapter 1/Section 1 Review We begin our College Algebra journey with a review of the basics according to the author of the textbook. Working with sets. There are two methods for denoting sets: Roster Method Set-Builder Notation Here is Sullivan's example. Let E = set of even digits Roster Method E = {0, 2, 4, 6, 8 } Why did Sullivan include 0 as an element in set E? To me, 0 is not even or odd. You say? Set-Builder Notation E = { x| x is an even digit } You say?