Refer to the map in Fig. 3. The number of shortest routes from A to B is
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Refer to the map in Fig. 3. The number of shortest routes from A to B is C(9, 4).
(a) Observe that the number of shortest routes from A to D is C(8, 3).
(b) Observe that the number of shortest routes from A to E is C(8, 4).
(c) By looking at Fig. 3, explain why C (8, 3) + C (8, 4) should equal C(9, 4).
(d) Calculate the values in part (c) to verify the equality.
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Related Book For
Finite Mathematics and Its Applications
ISBN: 978-0134768632
12th edition
Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair
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