

1. 
An arrangement in which order is not important is a(n) ________. 


A. 
permutation 
B. 
combination 


C. 
factorial 
D. 
outcome 


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. 
4,845 
B. 
116,280 


C. 
74 
D. 
24 


Hint 


3. 
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. 
30 
B. 
15 


C. 
24 
D. 
4 


Hint 


4. 
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. 
20 


C. 
2 
D. 
10 


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. 
90 
B. 
45 


C. 
30 
D. 
120 


Hint 


