Suppose that a certain college class contains 45 students. Of these, 29 are freshmen, 21 are economics majors, and 11 are neither. A student is selected at random from the class. (a) What is the probability that the student is both a freshman and an economics major? (b) Given that the student selected is a freshman, what is the probability that he is also an economics major? Write your responses as fractions. (If necessary, consult a list of formulas.) (0)0 (b)0 1.x