

1. 
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 


2. 
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 


3. 
Using a standard deck of 52 cards, find the probability of choosing a 10 given that the card is red. 


A. 

B. 



C. 

D. 



Hint 


4. 
A pair of number cubes is rolled. What is the probability that the sum is odd given that the sum is greater than or equal to 9. 


A. 

B. 



C. 

D. 



Hint 


5. 
A bag contains 5 blue marbles and 8 brown marbles. One marble is randomly drawn and discarded. Then a second marble is drawn. Find the probability that the second marble is blue given that the first marble drawn was brown. 


A. 

B. 



C. 

D. 



Hint 

