Lesson: Counting Principles: Addition Rule Mathematics
In this lesson, we will learn how to find the number of all possible outcomes of 2 or more events together using the addition counting principle.
A certain action can be performed in different ways. A second action, which is mutually exclusive of the first, can be performed in different ways. Write an expression for the number of ways to perform either the first action or the second action.
How many ways can 2 pencils of the same color be selected from 6 red and 3 blue?
There are 10 boys and 6 girls. What is the numerical expression that allows us to calculate how many ways there are of forming a group that consists of either 3 boys or 2 girls?