Kristina Karganova invites 16 relatives to a party: her mother, 3 aunts, 3 uncles, 3 brothers, 1 male cousin, and 5 female cousins. If the chances of any one guest arriving first are equally likely, find the probabilities that the first gue to arrive is as follows. (a) A brother or an uncle (b) A brother or a cousin (c) A brother or her mother (a) Find the probability that the first guest to arrive is a brother or an uncle. (Type an integer or a simplified fraction.)