Answer
Subset
Work Step by Step
Set A is a subset of set B if every element of set A is also an element of set B.
It is written as: $A\subset B$.
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 6: 2
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