A die is rolled 4 times. What is the probability that «3» appears 2 times given that «3» appeared at least one time?

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 die is rolled 4 times. What is the probability that «3» appears 2 times given that «3»
appeared at least one time?
Transcribed Image Text:A die is rolled 4 times. What is the probability that «3» appears 2 times given that «3» appeared at least one time?
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