Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 11 - Counting Methods and Probability Theory - 11.3 Combinations - Exercise Set 11.3: 70

Answer

In permutation problems, the order of selections is important while for combination problems, it is not.

Work Step by Step

Both are problems involving selections of r items from a set of n items, where any item can be chosen only once. Permutation problems involve when the order of the selected items is important. Combination problems involve when the order of the selected items is unimportant.
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