Answer
Total lakes = 80
Selected lakes = 1 polluted and 5 non-polluted
Possible ways of selection = 5! / (5-1)! 1! x 75!/(75-5)! 5!
= 86,296,950
Work Step by Step
As given in answer
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 175: 37
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