

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


A. 
245 
B. 
6 


C. 
5040 
D. 
35 


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. 
286 


C. 
715 
D. 
1287 


Hint 


3. 
If you have 10 CDs, and you want to take three of them with you on a road trip, how many different possibilities are there for which three you bring? 


A. 
604,800 
B. 
10 


C. 
3 
D. 
120 


Hint 


4. 
Which situation is a permutation? 


A. 
The number of ways you can choose 3 hot dog toppings from a total of 5. 


B. 
The number of ways 8 students can finish first, second, or third place at the Math Olympiad. 


C. 
The number of ways each person can shake hands with the other 11 people in the room. 


D. 
The number of games it would take to start 5 different basketball players from a team of 10. 


Hint 


5. 
Which situation is a combination? 


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


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


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


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


Hint 


