Having trouble understanding how to plug in this formula...
There are 52 colored balls in a large tumbler, 13
red, 13 blue, 13 yellow, and 13 green. The balls
of each color are lettered A through M. Five
balls are chosen at random.
How many 5-ball choices consist of exactly 4 balls with the same letter?
There are 52 colored balls in a large tumbler, 13
red, 13 blue, 13 yellow, and 13 green. The balls
of each color are lettered A through M. Five
balls are chosen at random.
How many 5-ball choices consist of exactly 4 balls with the same letter?