7. Two cards are selected from a pack of cards. What is the probability that they are both queen? a. 0.004525 b. 0.005425 c. 0.002545 d. 0.005452 8. The probability of Bill not graduating in college is 0.6. What is the probability that Bill will not graduate from college? a. 0.3 b. 0.4 c. 0.1 d. 0.2 9. How many combinations can be taken out of the letters A, B & C taken 2 at a time? c. 3 d. 4 a. 1 b. 2 10. An urn contains 6 red marbles and 4 black marbles. Two marbles are drawn without replacement from the urn. What is the probability that both of the marbles are black? a. 0.131 c. 0.133 b. 0.132 d. 0.134

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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ANSWER 9&10

7. Two cards are selected from a pack of cards. What is the probability that they are both
queen?
a. 0.004525
c. 0.002545
b. 0.005425
d. 0.005452
8. The probability of Bill not graduating in college is 0.6. What is the probability that Bill will
not graduate from college?
a. 0.3
b. 0.4
c. 0.1
d. 0.2
9. How many combinations can be taken out of the letters A, B & C taken 2 at a time?
c. 3
d. 4
a. 1
b. 2
10. An urn contains 6 red marbles and 4 black marbles. Two marbles are drawn without
replacement from the urn. What is the probability that both of the marbles are black?
a. 0.131
c. 0.133
b. 0.132
d. 0.134
Transcribed Image Text:7. Two cards are selected from a pack of cards. What is the probability that they are both queen? a. 0.004525 c. 0.002545 b. 0.005425 d. 0.005452 8. The probability of Bill not graduating in college is 0.6. What is the probability that Bill will not graduate from college? a. 0.3 b. 0.4 c. 0.1 d. 0.2 9. How many combinations can be taken out of the letters A, B & C taken 2 at a time? c. 3 d. 4 a. 1 b. 2 10. An urn contains 6 red marbles and 4 black marbles. Two marbles are drawn without replacement from the urn. What is the probability that both of the marbles are black? a. 0.131 c. 0.133 b. 0.132 d. 0.134
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