In the milk section of a self-service market there are 150 quarts, 100 of which are fresh, and 50 of which are a day old. (i) If 2 quarts are selected, what is the probability that both will be fresh? (ii) Suppose that the 2 quarts are selected after 50 quarts have been removed from the section. What is the probability that both will be fresh? (iii) What is the conditional probability that both will be fresh, given that at least 1 of them is fresh?