Aim: What is the counting principle?

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Presentation transcript:

Aim: What is the counting principle? Do Now: Multiply. 5 · 6 · 2 3. 10 · 4 · 3 12 · 5 · 3

Vocabulary Tree Diagram – an organized list of all possible outcomes Lists the sample space Counting Principle – finds the total number or possible outcomes by multiplying all the possibilities Example. Tossing a coin and rolling a die Tossing a coin = 2 possibilities Rolling a die = 6 possibilities So: 2 x 6 = 12 total possible outcomes

Example Draw a tree diagram to represent the number of outcomes. Use the counting principle to verify your answer. Example A quarter is tossed and a die is rolled.

Answer

Practice Draw a tree diagram to represent the number of outcomes. Use the counting principle to verify your answer. Angelino’s restaurant serves lunch with 2 choices for appetizer- soup or salad and 4 choices for main course – pizza, spaghetti, chicken parmesan, and lasagna.