Sarah, Kim, Ian, Larry, Eduardo, Jim, and Tyrone have all been invited to a dinner party. They arrive randomly and each person arrives at a different time.   a. In how many ways can they​ arrive? b. In how many ways can Sarah arrive first and Tyrone ​last? c. Find the probability that Sarah will arrive first and Tyrone last

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.6: Permutations
Problem 31E
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Sarah, Kim, Ian, Larry, Eduardo, Jim, and Tyrone
have all been invited to a dinner party. They arrive randomly and each person arrives at a different time.
 
a. In how many ways can they​ arrive?
b. In how many ways can Sarah arrive first and Tyrone ​last?
c. Find the probability that Sarah will arrive first and Tyrone last
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