Solve each problem using the given techniques in counting. 1.) In how many ways can 5 people arrange themselves in a row for picture taking? Give an example using either listing or tree diagram.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Solve each problem using the given techniques in counting.

1.) In how many ways can 5 people arrange themselves in a row for picture taking? Give an example using either listing or tree diagram. 

2.) An apartment has 7 different units. There are seven tenants waiting to be assigned.
In how many ways can they be assigned to the different units? give an example using fundamental counting principle?

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