Concept explainers
(a)
To find: The number of ways in which the books can be arranged on a shelf if Kelly Clark has 4 blue, 3 green and 2 red books.
(b)
To find: The number of arrangements possible if books of the same color are to be grouped together.
(c)
To find: The number of distinguishable ways in which the books can be arranged if books of the same color are identical but need not be grouped together.
(d)
To find: The number of ways in which 3 books can be selected, one of each color, if the order in which the books are selected does not matter.
(e)
To find: The number of ways in which 3 books can be selected, one of each color, if the order in which the books are selected does matter.
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