You have two boxes in front of you. You cannot see the contents of the boxes, but you are told that one box contains two red pencils and the other drawer contains one red pencil and one blue pencil. If you pull a pencil at random out of box A and it turns out to be red, what is the probability that box A is the box with two red pencils?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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You have two boxes in front of you. You cannot see the contents of the boxes, but you are told that one box contains two red pencils and the other drawer contains one red pencil and one blue pencil. If you pull a pencil at random out of box A and it turns out to be red, what is the probability that box A is the box with two red pencils?

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