Professor Hickey assigned two homework problems to a class of 35 students. At the next meeting, 11 indicated that they had worked the first problem, 14 had worked the second problem, and 9 had worked both.
(a) Determine the number who worked at least one of the problems.
students
(b) Determine the number who worked only the first problem.
2
students
(c) Determine the number who worked exactly one of the problems.
students
(d) Determine the number who worked neither of the problems.
29
students