1The college food plan allows a student to choose four piece

1.The college food plan allows a student to choose four pieces of fruit each day. the fruits available are apples, bananas, peaches, and plums. for how many days can a student make a different selection?

2. Suppose that an urn contains 16 balls, of which nine are red and seven are black. In how many ways can six balls be chosen so that at most three are black?

Solution

1. number of days can a student make a different selection = number of ways of choosing 4 pieces out of the 4 fruits = 4C4 = 1