Answer
{3}
Work Step by Step
A ∩ B is the set of elements common to both set A and set B.
Only 3 is in both sets {1,3,7} and {2,3,8}.
So,
{1,3,7} ∩ {2,3,8} = {3}
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.1 - Page 17: 22
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