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Solve There is a collection of four different children's books. a. In how many ways can they all be arranged on a shelf? b. In

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There is a collection of four different children's books.

a. In how many ways can they all be arranged on a shelf?

b. In how many ways can they all be arranged if 'Goodnight Moon' must be first and 'Good Night Gorilla' must be last?

c. What is the probability that the collection was arranged with 'Goodnight Moon' first and 'Good Night Gorilla' last?

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