A little boy is placing 20 of his marbles in a row. If 12 are red and 8 are blue and he
Chapter 9, Problem 17(choose chapter or problem)
A little boy is placing 20 of his marbles in a row. If 12 are red and 8 are blue and he decides not to place 2 blue marbles next to each other, how many arrangements of the marbles are possible?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer