

1. 
A home security company offers a security system that uses the numbers 0 through 6, inclusive, for a 3digit security code. How many different security codes are possible if no digit may be repeated? 


A. 
35 
B. 
20 


C. 
120 
D. 
210 


Hint 


2. 
How many different sixletter patterns can be formed from the letters of the word turkey? 


A. 
120 
B. 
720 


C. 
156 
D. 
30 


Hint 


3. 
How many ways can 5 people be seated at a round table? 


A. 
120 
B. 
48 


C. 
240 
D. 
24 


Hint 


4. 
A bag contains 2 yellow, 4 blue, and 3 white marbles. What is the probability that a marble selected at random will not be blue? 


A. 

B. 



C. 

D. 



Hint 


5. 
Raphael is conducting a survey of families with 2 children. If a family is selected at random, what is the probability that the family will have exactly 2 girls if the second child is a girl? 


A. 

B. 



C. 
1 
D. 



Hint 


6. 
In Mr. Jonas' homeroom, 70% of the students have brown hair, 25% have brown eyes, and 5% have both brown hair and brown eyes. A student is excused early to go to a doctor's appointment. If the student has brown hair, what is the probability that the student also has brown eyes? 


A. 

B. 



C. 

D. 



Hint 


7. 
What is the value of C(8, 4)? 


A. 
6720 
B. 
1680 


C. 
70 
D. 
26 


Hint 


8. 
Using a standard deck of 52 cards, what are the odds of choosing a card with a value of 8 or less? 


A. 

B. 



C. 

D. 



Hint 


9. 
Using a standard deck of 52 cards, find the probability of choosing 2 cards that are both black or both kings, without replacement. 


A. 

B. 



C. 

D. 



Hint 


10. 
Find the probability of randomly picking 3 kittens of which at least 2 are female kittens, from a group of 7 male kittens and 5 female kittens. 


A. 

B. 



C. 

D. 



Hint 


11. 
A number cube is tossed four times. Find the probability that at least two 6s are tossed. 


A. 
0.1748 
B. 
0.1106 


C. 
0.0962 
D. 
0.1319 


Hint 


12. 
The probability of tossing a tail on a bent coin is . The coin is tossed 5 times. Find the probability of tossing exactly 3 tails. 


A. 
0.2906 
B. 
0.3028 


C. 
0.3292 
D. 
0.3114 


Hint 

