Probability Counting Principle

What is the probability of selecting a cherry piece of candy?

• 3 out of 10

• 3 out of 3

• 3 out of 9

• 4 out of 10

Randall wants to buy a pizza. He can select from 5 different sizes, 4 types of crust, and 12 toppings for his pizza. How many different outcomes of pizzas can Randall order?

(a)  

The objective is

• I can figure the probability of something happening.

• I can roll dice

• I can select a color

• I can guess an answer

A spinner has 8 equal regions. Each region is marked with one of the following numbers: 10, 20, 30, 40, 50, 60, 70, 80. What is the probability of an even number being spun on the first roll?

• 1/8

• 1/2

• 1

• 3/8

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled?

• 1/5

• 5/6

• 1/6

• 6/5

How many total outfit options are represented?

• 12

• 22

• 3

Jason can choose 1 pair of pants and one shirt to wear today. Here are his choices. Which tree diagram shows all of the combinations that Jason can choose from?

• 
• 
• 
• 

What is the probability of spinning an even number? 

• equally likely

• very likely 

• certain

• impossible 

What is the probability of rolling 15 with a pair of dice?

• impossible

• unlikely

• equally likely

• likely