#### 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:
$A'=${$4;5$}

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$A'=${$4;5$}

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