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Box A contains 2 black and 3 red balls, ...

Box A contains 2 black and 3 red balls, while box B contains 3 black and 4 red balls . Out of these two boxes one is selected at random, and the proability of choosing box A is double that of box B. if a red ball is drawn from the selected box then the proability that is has come from box B is

A

21/41

B

`10//31`

C

`12//31`

D

`13//41`

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B
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  5. A bag contains 6 white and 4 black balls.A fair die is rolled and a nu...

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  6. A bag contains 2n coins out of which n-1 are unfair with heads on both...

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  7. A letter is known to have come either from LONDON or CLIFTON, on the p...

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  8. A bag contains four balls. 3 white balls and 1 black ball.2 balls are...

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  9. A bag contains six balls. Two balls are drawn and found them to be red...

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  10. An urn contains 5 white and 3 black balls and 4 balls are drawn at ran...

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  11. Three boxes numbered, I, II, III contain balls as follows {:(,"White...

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  12. A bag A contains 2 white and 3 red balls and a bag B contains 4 white ...

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  13. Fpr L=1,2,3 the box Bk contains k red balls and (k+1) white balls . Le...

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  14. Box A contains 2 black and 3 red balls, while box B contains 3 black ...

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  15. A ,B ,C are there routes from the house to the office. On any day, the...

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  16. A man is known to speak the truth 3 out of 4 times. He throws a die an...

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  17. A man speaks truth in 60% cases. He throws a die and reports that it i...

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  18. A man is known to speack the truth 2 out of 3 times . He throws a die ...

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  19. In an entrance test there are multiple choice questions. There are fou...

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  20. In a certain colleage, 4% of men and 1% of women are taller than 1.8m....

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