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GRE Math: Probability Practice Test
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GRE Math: Probability Practice Test
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8 Questions

1. A fair, six-sided die is to be rolled 3 times. What is the probability that the die will land on a prime number each time?
2. A restaurant offers a special that consists of an entrée, a main course, and a dessert. If customers can choose from 4 entrées, 5 main courses, and 3 desserts, how many different meals can be chosen?
3. 20 of the 80 employees at a certain organization are doctors. If two employees are to be selected at random, which of the following is closest to the probability that neither employee selected is a doctor?
4. 10 people enter a competition in which the winner earns a gold medal, the second-place finisher earns a silver medal, the third-place finisher earns a bronze medal, and no other awards are given. In how many different ways can the medals be awarded?
5. How many three-letter arrangements can be selected from the letters ABCDE?
6. Set A consists of the integers 2, 3, 5, 7, and 9. Set B consists of the integers 1, 4, 6, 8, and 10. If a number in Set A is to be multiplied by a number in Set B, how many different products are possible?
7. Next week, the probability of rain on each day will be 0.6. What is the probability that it will rain on Monday, but not on Tuesday?
8. A certain jar contains 21 marbles, 7 of which are red. If two marbles are to be selected, with replacement, what is the probability that both marbles will be red?