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Ina certain town, 40% of the people have...

Ina certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random from the town has brown hair, the probability that he also has brown eyes is `1//5` b. `3//8` c. `1//3` d. `2//3`

A

`1//5`

B

`3//8`

C

`1//3`

D

`2//3`

Text Solution

Verified by Experts

The correct Answer is:
B

We have, `P(A)=40/100,P(B)=25/100and P(AnnB)=15/100`
So, `P((B)/(A))=(P(AnnB))/(P(A))=(15//100)/(40//100)=3/8`
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CENGAGE-PROBABILITY II-Exercise (Single)
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  2. A father has 3 children with at least one boy. The probability that he...

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  3. Ina certain town, 40% of the people have brown hair, 25% have brown ...

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  4. Let Aa n dB are events of an experiment and P(A)=1//4, P(AuuB)=1//2, t...

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  5. The probability that an automobile will be stolen and found within one...

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  6. A pair of numbers is picked up randomly (without replacement) from the...

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  8. One ticket is selected at random from 100 tickets numbered 00,01,02, …...

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  9. Two dice are rolled one after the other.The probability that the numbe...

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  10. Cards are drawn one-by-one at random from a well-shuffled pack of 52 ...

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  12. A six-faced dice is so biased that it is twice as likely to show an ...

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  13. A student appears for tests I, II and III. The student is successful i...

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  14. A problem in mathematics is given to three students A ,B ,C and their ...

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  15. Let A,B, C be three mutually independent events. Consider the two stat...

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  16. Three ships A ,B ,a n dC sail from England to India. If the ratio of t...

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  17. Cards are drawn one by one without replacement from a pack of 52 cards...

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  18. Five horses are in a race. Mr. A selects two of the horses at random ...

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  19. Let A and B be two events such that p( bar AuuB)=1/6, p(AnnB)=1/4 and...

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  20. A class consists of 80 students, 25 of them are girls and 55 are boys....

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