Answer
We are counting number of ways r to to select n objects without regarding any order. An example can be number of ways players of team are arranged for batting.
Work Step by Step
No steps
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 3 - Probability - Section 3.4 Additional Topics in Probability and Counting - Exercises - Page 174: 2
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