3. Wayne has a pile of 20 books to read. (a) In how many orderings can he read them? (b) In how many orderings can he read them if the pile includes the 7 Harry Potter books, which must be read in order and consecutively? (c) How many orderings if the 7 Harry Potter books must be read in order but not necessarily consecutively?

3. Wayne has a pile of 20 books to read. (a) In how many orderings can he read them? (b) In how many orderings can he read them if the pile includes the 7 Harry Potter books, which must be read in order and consecutively? (c) How many orderings if the 7 Harry Potter books must be read in order but not necessarily consecutively?

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section: Chapter Questions

Problem 4T: Over the past year, John has purchased 30 books. In how many ways can he pick four of these books...

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