CK-12 Foundation
Ck 12: Probability: Basic Counting Rules
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to define and apply the Fundamental Counting Principle.
CK-12 Foundation
Ck 12: Probability: Basic Counting Rules Grade 7
[Free Registration/Login may be required to access all resource tools.] Use this lesson to learn about The Counting Principle.