21. Two identical boxes contain balls. One of the boxes has 7 red balls and 4 blue balls. The other box has 6 red balls and 9 blue balls. A box is chosen at random and two balls are drawn at random from this box, without replacement. (a) What is the probability that both balls are red? (b) What is the probability that the second ball is red, given that the first ball is red? (c) What is the probability that both balls are green?
21. Two identical boxes contain balls. One of the boxes has 7 red balls and 4 blue balls. The other box has 6 red balls and 9 blue balls. A box is chosen at random and two balls are drawn at random from this box, without replacement. (a) What is the probability that both balls are red? (b) What is the probability that the second ball is red, given that the first ball is red? (c) What is the probability that both balls are green?
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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