9. On a small college campus, there are five English professors, four mathematics professors, two science professors, three psychology professors, and three history professors. If a professor is selected at random, find the probability that the professor is the following a) An English or psychology professor. b) A mathematics or science professor. c) A history, science, or mathematics professor. d) An English, mathematics, or history professor.

9. On a small college campus, there are five English professors, four mathematics professors, two science professors, three psychology professors, and three history professors. If a professor is selected at random, find the probability that the professor is the following a) An English or psychology professor. b) A mathematics or science professor. c) A history, science, or mathematics professor. d) An English, mathematics, or history professor.

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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Question

5. Please take a look to pic and solve the probability problem.

9. On a small college campus, there are five English professors, four
mathematics professors, two science professors, three psychology
professors, and three history professors. If a professor is selected at
random, find the probability that the professor is the following
a) An English or psychology professor.
b) A mathematics or science professor.
c) A history, science, or mathematics professor.
d) An English, mathematics, or history professor.

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