1. (a) Jane has a ten pairs of shoes. Of these pairs of shoes, four are casual sneakers, three are flat sandals with a small heal, two are sandals with high heels, and one is a pair of boots. Mary is packing her suitcase for an overseas trip, If Jane can only fit three pairs of shoes in her suitcase, what is the probability that her suitcase contains one pair of casual sneakers and at least one pair of flat sandals? (b) Mary has a twelve pairs of shoes. Of these pairs of shoes four are casual sneakers, three are flat sandals with a small heal, three are sandals with high heels, and two are thongs. Mary is packing for an overseas trip. What is the probability that her case contains two pairs of sneakers, two flat sandals, one pair of high heels and a pair of thongs