Imagine we draw 8 balls from a bag that contains 20 balls. If we replace each ball after drawing it, and order matters, how many ways are there of doing this? 820 208 O

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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Imagine we draw 8 balls from a bag that contains 20 balls. If we replace each ball after drawing it, and order matters, how many ways are there of doing this?
820
208
20!
12!
(²0)
Transcribed Image Text:Imagine we draw 8 balls from a bag that contains 20 balls. If we replace each ball after drawing it, and order matters, how many ways are there of doing this? 820 208 20! 12! (²0)
Expert Solution
Step 1: Introducing the given information

We have given that
n = 20, r = 8

Here we will use the concept of permutation 

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