Thinking Mathematically (6th Edition)

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

Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3: 80

Answer

The cardinality of A is 3.

Work Step by Step

Using the diagram, we can determine that: A = {#, \$, $\Delta$}, which means that the cardinality of A is 3.
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