In a survey of 500 students in a university, 200 are enrolled in Psych 101, 180 are enrolled in Spanish 200, 170 are enrolled in French 10, 40 in Psych 101 and Spanish 200, 45 in Spanish 200 and French 10, 50 in Psych 101 and French 10, and 15 in all the three courses. How many students are enrolled in: a. Any of the three courses b. Not in Psych 101 or not in French 10 c. not in both Psych 101 and French 10

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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In a survey of 500 students in a university, 200 are enrolled in Psych 101, 180 are enrolled in Spanish 200, 170 are enrolled in French 10, 40 in Psych 101 and Spanish 200, 45 in Spanish 200 and French 10, 50 in Psych 101 and French 10, and 15 in all the three courses. 
How many students are enrolled in:
a. Any of the three courses

b. Not in Psych 101 or not in French 10

c. not in both Psych 101 and French 10

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