A university cafeteria surveyed the students who ate breakfast there for their coffee preferences. The findings are summarized as follows:
A student is selected at random from this group.
Find the probability that the student
(a) does not drink coffee.
(b) is male.
(c) is a female who prefers regular coffee.
(d) prefers decaffeinated coffee, the student being selected from the male students.
(e) is male, given that the student prefers decaffeinated coffee.
(f) is female, given that the student prefers regular coffee or does not drink coffee.