Answer
$\overline{X\cup Y}=\{February\}$
Work Step by Step
$X=\{April,June,September, November\}$
$Y=\{January,March,May,July,August,October,December\}$
Hence $\overline{X\cup Y}=\{February\}$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - Extension - Apply Set Theory - Practice - Page 716: 16
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