Given P(A) = 0.34, P(A and B) = 0.20, P(A or B) = 0.55, what is P(B)?

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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Given P(A) = 0.34, P(A and B) = 0.20, P(A or B) = 0.55, what is P(B)?

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Step 1

We have given that, 

P(A) = 0.34, P(A and B) = 0.20, P(A or B) = 0.55, then,

We will find the value P(B) = ? 

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