(1) There are 100 Starburst candies in a bag: 25 each of orange, red, pink, and yellow.
(a) How many ways can 20 people pick a single Starburst from the bag? (We can distinguish between the 4 colors, but not between individual Starbursts of one color.)
(b) How many ways can those 20 people pick Starburst so that the first 5 people all get red?
(c) Consider P(the first 5 people get red).