Liam's bowl of spaghetti contains n strands. He selects two ends atrandom and joins them together. He does this until there are no ends left. What is theexpected number of spaghetti hoops in the bowl?

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College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section9.1: Counting

Problem 3E: The number of ways of choosing r objects from n objects is called the number of ___________ of n...

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Liam's bowl of spaghetti contains n strands. He selects two ends at random and joins them together. He does this until there are no ends left. What is the expected number of spaghetti hoops in the bowl?