

1. 
A group of 10 students is to be divided into 2 groups of 5. How many ways is this possible? 


A. 
252 
B. 
10 


C. 
120 
D. 
30,240 


Hint 


2. 
You have an assignment for an art class to paint a painting using only four colors. Visiting an art store, you find 20 colors from which to choose. How many different combinations of colors are there? 


A. 
74 
B. 
4,845 


C. 
116,280 
D. 
24 


Hint 


3. 
While at a local video rental store, 5 movies catch your eye, but you only want to rent 2. How many combinations are there? 


A. 
5 
B. 
2 


C. 
10 
D. 
20 


Hint 


4. 
Which situation is a combination? 


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


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


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


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


Hint 


5. 
Ten students are playing in a chess tournament. If each student plays every other student once, how many total games are played? 


A. 
120 
B. 
45 


C. 
90 
D. 
30 


Hint 


