Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 2 - Set Theory - 2.1 Basic Set Concepts - Exercise Set 2.1 - Page 58: 17

Answer

{September, October, November, December}

Work Step by Step

The roster method lists each element of the set (if the set is finite and it is a reasonably sized set) with a pair of set braces. The months that end with the letters β€œber” are September, October, November, December.
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