(a) From a collection of 51 store customers, 3 are to be chosen to receive a special gift. How many groups of 3 customers are possible? 0 (b) 52 athletes are running a race. A gold medal is to be given to the winner, a silver medal is to be given to the second-place finisher, and a bronze medal is to be given to the third-place finisher. Assume that there are no ties. In how many possible ways can the 3 medals be distributed?