A box of candy contains 52 hearts, of which 19 are white, 10 are tan, 7 are pink, 3 are purple, 5 are yellow, 2 are orange and 6 are green. If you select 9 pieces randomly from the box, without replacement, give the probability that
(a) Three of the hearts are white.
(b) Three are white, two are tan, one is pink, one is yellow and two are green.