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How many different ways can four Presidents and Vice Presidents stand in a line for a picture if: a) There are no restrictions? b)
How many different ways can four Presidents and Vice Presidents stand in a line for a picture if: a) There are no restrictions? b) Every President and Vice President must stand together? c) There must be four Presidents in the middle four positions?
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Introduction To Mathematical Statistics And Its Applications
Authors: Richard J. Larsen, Morris L. Marx
5th Edition
321693949, 978-0321694027, 321694023, 978-0321693945
