College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Section 9.1 - Counting - 9.1 Exercises - Page 658: 74

Answer

1287

Work Step by Step

The jogger can only go East or North because any other path would be slower. He also MUST go north 5 blocks and east 8 blocks. We can think of this as ordering $EEEEEEEENNNNN$ to from as many distinct permutations. $13!/(8!*5!) = 1287$
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