A. What is Combinatorics?
B. State the Multiplication Rule of Counting
C. State the Addition Rule of Counting
D. Describe the 2 approaches of defining probability.
How many words can we build using exactly 4 A's, 4 B's and 4 C's if the first 4 letters cannot be A's, the second 4 letters cannot be B's and the third 4 letters cannot be C's?