Explanation 1) Definition: A permutation is an ordering of distinct objects. If we select r different objects from a set of n objects, and arrange them in order this is called a permutation of n objects taken r at a time, which denoted by p ( n , r ) Formula for computing p ( n , r ) = n ! ( n − r ) ! 2) Calculation: Given, An armored car must pick up receipts at a shopping mall and at a jewelry store and deliver them to bank. Using the given map, From the above map, We have 5 different routes with 5 different sub routes. Now, we have to find the different direct routes from mall to bank where he stop at jewelry store also. So he must take first two routes. Thus, the number of different direct routes from mall to bank with stop at jewelry shop is given by the permutation P ( 5 , 2 )

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ISBN: 9780135902783

Author: Pirnot

Publisher: PEARSON

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Chapter 12.3, Problem 68E

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The number of different routes where the driver take from the mall to the bank. If he must also stop at the jewelry store.

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Chapter 12.3, Problem 67E

Chapter 12.3, Problem 69E

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The number of different routes where the driver take from the mall to the bank. If he must also stop at the jewelry store.

Solution Summary: The author explains that the driver has 20 different direct routes to take from shopping mall to the bank if he must also stop at the jewelry store.

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To find: The number of different routes where the driver take from the mall to the bank. If he must also stop at the jewelry store.

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Chapter 12 Solutions

To find:

The number of different routes where the driver take from the mall to the bank. If he must also stop at the jewelry store.