At a day care, there are 5 apples, 8 pears and 12 oranges available for snack time. Marsha & Adrienne get to the front of the line ( in that order ) and get first pick at the fruit.
a) what is the probability they both select the same fruit?
b) what is the probability that at least one of them selects a pear?
c) what is the probabililty exactly one of them selects an orange?