

1. 
How many ways can 3 CDs be selected from a stack of 7 different CDs? 


A. 
6 
B. 
245 


C. 
35 
D. 
5040 


Hint 


2. 
AllStar Pizza offers a large pizza with any three toppings for $9.95. If you can choose from 13 different toppings, how many different pizzas are possible? 


A. 
78 
B. 
715 


C. 
1287 
D. 
286 


Hint 


3. 
A group of 10 students is to be divided into 2 groups of 5. How many ways is this possible? 


A. 
10 
B. 
30,240 


C. 
120 
D. 
252 


Hint 


4. 
You have tests coming up soon in all your classes. You have six schoolbooks that you could take home, but only room for four in your backpack. How many different combinations of schoolbooks can you take home in your backpack? 


A. 
4 
B. 
30 


C. 
15 
D. 
24 


Hint 


5. 
Which situation is a combination? 


A. 
The number of ways a coach can choose 3 cocaptains for a soccer team. 


B. 
The number of ways 50 people can line up to enter a concert hall. 


C. 
The number of ways a committee can choose a president, vicepresident, and treasurer. 


D. 
The number of ways 3 books can be displayed in a store window. 


Hint 


