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Probability and Odds Worksheet_PreCalculus

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									Probability and Odds Worksheet                      PreCalculus

1) A die is rolled once. What is the probability of getting number 5?

2) In a math class, there are 3 girls and 5 boys. The teacher asks a volunteer to
come to the board. What is the probability that the student is a girl?

3) A die is rolled once. What is the probability of getting an even number?

4) A die is rolled once. What is the probability of getting a two, a six, or a nine?

5) What is the probability that the spinner in the picture stops on blue or yellow?




6) A die is rolled once. What is the probability of not getting number 2?

7) A vase has 4 yellow flowers, 4 red flowers, and 8 blue flowers. Donna took a
flower, smelled it, and returned it to the vase. What are the odds that the first
flower was red and the second flower was blue?

8) Two number cubes are rolled. What are the odds that one cube will show at least
5 and the other number cube will show a multiple of 3?

9) What are the odds that the spinner in this picture stops on green or red?




10) A die is rolled and a coin is tossed. What is the probability of getting seven and
tails?

11) A twelve-sided dice is rolled. P (even number) = ______

12) There are 30 students in a class: 16 boys and 14 girls. What is the probability
that a 1 boy will be chosen at random?

13) You roll a fair six-sided number cube. Odds for 5 = ______

14) You don’t really feel like reading during AP English Lit so you open your book to
a random page to make your teacher think you’re reading. The book you have has
541 pages. Odds for opening to a page in the 100’s = ______
15) The following marbles are in a bag: 5 red, 2 orange, 3 yellow, 4 green, 5 blue,
and 5 purple. You reach in and pull one marble out at random.
Odds against a primary color = ______

                                                         4
16) The probability that you will win a competition is     .
                                                         7
Odds against winning = ______

17) You have a bag full of equal numbers of red, blue, green, yellow, and orange
M&Ms. There are 50 M&Ms in the bag. What is the probability that you will
randomly pull out an orange M&M?

								
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