Counting technique: Seven children are to be selected from a group of nine children. a) What is the probability that Danylo and Shuying are included? b) What is the probability that Danylo and Shuying are not included?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Counting technique: Seven children are to be selected from a group of nine children. a) What is the probability that Danylo and Shuying are included? b) What is the probability that Danylo and Shuying are not included? c)What is the probability that Danylo is selected as first and Shuying is selected as last in the group?
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