Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises - Page 19: 16

Answer

Thus, all the elements of $A$ are real numbers.

Work Step by Step

When the sets whole numbers, integers, natural numbers, rational numbers, and irrational numbers are combined together in a set, the result is the set of all real numbers. Thus, all the elements of $A$ are real numbers.
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