In the final results, there are four student candidates for the first rank. Call them A, B, C, and D. Based on their performance analysis, we estimate that A has a 20 percent chance of winning, while B has a 40 percent chance of winning. What is the probability that A or B win the first rank?

In the final results, there are four student candidates for the first rank. Call them A, B, C, and D. Based on their performance analysis, we estimate that A has a 20 percent chance of winning, while B has a 40 percent chance of winning. What is the probability that A or B win the first rank?

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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In the final results, there are four student candidates for the first rank. Call
them A, B, C, and D. Based on their performance analysis, we estimate
that A has a 20 percent chance of winning, while B has a 40 percent
chance of winning. What is the probability that A or B win the first rank?

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