1.  Craps is a dice rolling game.  A player wins on the first roll if the player rolls a sum of 7 or 11, and the player loses if the player rolls a 2, 3, or 12. Find the probability that the game will last only one roll.



2. Giving a test to a group of students, the grades and gender are summarized below. Select one student at random.

	A	B	C	Total
Male	5	9	6	20
Female	10	12	8	30
Total	15	21	12	50

a.  Find the probability that the student was female and received a B.

b.  Find the probability that the student was not a female that received a B.

c.  Find the probability that the student was female.

d.  Find the probability that the student was male or received an A.




3.  A marble is drawn randomly from a jar that contains 6 red marbles, 2 white marbles, and 5 yellow marbles. Find the probability of the given event.
a. A red marbles is drawn
b. A white marble is drawn