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Overlapping Sets, Probability

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by swerve » Sat Oct 03, 2020 7:25 am

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Answers

A

B

C

D

E

Stats

Difficulty—

In a survey of 248 people, 156 are married, 70 are self-employed and 25% of those who are married are self-employed. If a person is to be randomly selected from those surveyed, what is the probability that the person selected will be self-employed but not married?

A. 1/8
B. 4/31
C. 117/248
D. 1/4
E. 31/117

The OA is A

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Re: Overlapping Sets, Probability

by DHRJ007 » Sat Oct 03, 2020 9:25 pm
For two variables ,matrix approach is better
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