P(A) =

The Number Of Ways Event A Can Occur

The Total Number Of Possible Outcomes

In the first question I used the formula:

1a. The probability that a dime will be picked is ¼.

1b. The probability that a half dollar will be picked is 0/12 or it can’t be possible.

1c. The probability that a quarter will be picked is 1/6.

The second question I figured out when rolling one red and one green die there is 36 different possibilities.

2a. (5, 5) (6, 4) (4, 6) so 3/36.

2b. (4, 4) (2, 6) (6, 2) (3, 5) (5, 3) so 5/36.

3c. (1, 2) (2, 1) so 2/36 or 1/18.

3a. Possibility of drawing a card that is not Saddam Hussein is 51/55. There is four Kings (Saddam Hussein) in a normal playing deck.

3b. You draw two cards, which end up being Saddam Hussein and another one with his cousin “Chemical Ali” the probability is (4/55)*(4/54)= 16/2970.

3c. You draw 14 cards and not one of them is Saddam Hussein. Take (51/55)*(50/54)*(49/53)*(48/52)*(47/51)*(46/50)*(45/49)*(44/48)* (43/47)*(42/46)*(41/45)*(40/44)*(39/43)*(38/42) =.297 or 29.7% chance of not receiving Saddam Hussein.

References:

Lesson on Introduction to Probability. Retrieved on July 18, 2008, from http://www.mathgoodies.com/lessons/vol6/intro_probability.html

Basic Probability. Retrieved on July 15, 2008, from D:modulesmodule01What is probability.ppt