Answer
$A'=${$4;5$}
Work Step by Step
$A'$ means the complement set of A, which contains all elements that are in the universal, but not in set A.
Here:
$U=${$1;2;3;4;5$}
$A=${$1;2;3$}
Therefore:
$A'=${$4;5$}
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.1 Sets - R.1 Exercises - Page 7: 8
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