Thinking Mathematically (6th Edition)

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

Chapter 2 - Set Theory - 2.4 Set Operations and Venn Diagrams with Three Sets - Exercise Set 2.4: 104

Answer

$I$

Work Step by Step

"Wind of Change" was recorded by The Scorpions, a group. It sold 14 million copies and was released in 1991. Thus, this song belongs to the set "Recorded by a group" but not to "Recorded before 1990" and "Sales exceeded 15 million." Therefore, it must be written in Region $I$.
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