Concept explainers
(a)
Five different math books, three different physics books and four different chemistry books should be arranged on a shelf.
(b)
Five different math books, three different physics books, and four different chemistry books should be arranged on a shelf if all books of the same subject are held together.
(c)
Five different math books, three different physics books and four different chemistry books should be arranged on a shelf. If three out of five math books are the same.
(d)
Five different math books, three different physics books, and four different chemistry books should be arranged on a shelf. If, moreover, all physics books are the same.
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Discrete Mathematics with Graph Theory (Classic Version) (3rd Edition) (Pearson Modern Classics for Advanced Mathematics Series)
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