Question

Of 400 college students, 115 are enrolled in math, 225 are enrolled in English, and 55 are enrolled in both. If a student is selected at random, find the probability of the following. The student is not enrolled in English or is enrolled in mathematics.

Answer 1

115 are enrolled in Math, of which 55 are also enrolled in English. So, 115-55, or 60 are enrolled in math alone. 225 are enrolled in English, so 175 are not. Then, 175+60/400=.5875 probability that student is not enrolled in English or is enrolled in math. ☺☺☺☺