Answer
15
Work Step by Step
For the subsets for the given set {2,4,6,8}
Total number of subsets are: 2^{4} = 16
Among these 16 subsets we know one subset is the given set itself, so total number of proper subsets are = 16 - 1 = 15.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 2 - Set Theory - 2.2 Subsets - Exercise Set 2.2 - Page 68: 61
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