A bag contains 9 black, 5 red, 7white and 4 purple balls. What is the probability of choosing: a).  A red or white or purple ball? b).  A black or red or purple ball?

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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A bag contains 9 black, 5 red, 7white and 4 purple balls. What is the probability of choosing:

a).  A red or white or purple ball?

b).  A black or red or purple ball?

Expert Solution
Step 1

Given,no.of black balls=9no.of red balls=5no.of white balls=7no.of purple balls=4total no.of balls=25

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