Question I
In the senior year of a high school graduating class of 100
students, 42 studied mathematics, 68 studied psychology, 54 studied
history, 22 studied both mathematics and history, 25 studied both
mathematics and psychology, 7 studied history but neither
mathematics nor psychology, 10 studied all three subjects, and 8
did not take any of the three. Randomly select a student from the
class and find the probabilities of the following events.
(a) A person enrolled in psychology takes...