College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 10 - Section 10.1 - Counting - 10.1 Assess Your Understanding - Page 687: 9


$\emptyset$; {a}; {b}; {c}; {d}; {a,b}; {a,c}; {a,d}; {b,c}; {b,d}; {c,d}; {a,b,c}; {a,b,d}; {b,c,d}; {a,b,c,d}.

Work Step by Step

The number of elements in a subset can be 0, 1, 2, 3, 4. Now we have to write all variation of elements: $\emptyset$; {a}; {b}; {c}; {d}; {a,b}; {a,c}; {a,d}; {b,c}; {b,d}; {c,d}; {a,b,c}; {a,b,d}; {b,c,d}; {a,b,c,d}.
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