For a certain candy, 15% of the pieces are yellow, 15% are red, 20% are blue, 10% are green, and the rest are brown. a) If you pick a piece at random, what is the probability that it is brown? b) If you pick a piece at random, what is the probability that it is yellow or blue? c) If you pick a piece at random, what is the probability that it is not green? d) If you pick a piece at random, what is the probability that it is striped?