

1. 
A music store has 2 new pop CDs, 3 new rap CDs, and 2 new rock CDs in this week. If you purchase 1 of each type, how many combinations are there? 


A. 
10 
B. 
7 


C. 
15 
D. 
12 


Hint 


2. 
A sporting goods store sells ball caps in four sizes: S, M, L, and XL. Each hat is available in 5 colors and can be purchased with or without a logo. Find the number of combinations available. 


A. 
40 
B. 
10 


C. 
11 
D. 
20 


Hint 


3. 
You are going to order a onetopping pizza from your favorite pizzeria. You can get the pizza on thin crust, traditional crust, or deepdish. The toppings you have to choose from are pepperoni, sausage, onions, mushrooms, peppers, and extra cheese. You also have to choose whether to pick it up or have it delivered. How many combinations are there for you to choose from? 


A. 
40 
B. 
8 


C. 
11 
D. 
36 


Hint 


4. 
A computer store offers a computer with a 15, 17, or 19inch monitor and an inkjet or laser printer. Make a tree diagram to show the different ways a computer can be sold with a monitor and printer. 


A. 



B. 



C. 



D. 



Hint 


5. 
Suppose you toss three quarters. What is the probability that exactly two of the coins will show tails? 


A. 

B. 



C. 

D. 



Hint 


