Piper B.

asked • 09/22/15

Among 500 freshmen pursuing a business degree at a university, find the probabilities if...

500 Freshman pursuing a business degree at a university, 336 are enrolled in an economics course, 226 are enrolled in a mathematics course, and 128 are enrolled in both an economics and a mathematics course.
 
What is the probability that a freshman selected at random from this group is enrolled in each of the following?
A) an economics and/or a mathematics course
B) exactly one of these two courses
C) neither an economics nor a mathematics course 
 

Enter your answers in decimal place. 
 
Please include work so i can follow along and try to understand!
 

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