SECTION B 1. The probability that for any married couple the husband has a degree is o and the probability that the wife has a degree is J. The probability that the husband has a degree, given that the wife has a degree, is 14. A married couple is chosen at random. Find the probability that (a) both of them have degrees, (b) only one of them has a degree, (c) neither of them has a degree. Two married couples are chosen at random. (d) Find the probability that only one of the two husbands and only one of the two wives have a degree. (L)