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Bag A contains 8 black and 5 balls. Cont...

Bag A contains 8 black and 5 balls. Contain 6 black and 7 white balls. A die is rolled . If 2 or 5 turns up , then choose bag a otherwise choose bag B. If one ball is drawn from the selected bag, the probability that it is black is

A

20/39

B

43/90

C

34/89

D

52/77

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A
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  2. Bag A contains 3 white and 2 black balls. Bag B contains 2 white and 4...

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  3. Bag A contains 8 black and 5 balls. Contain 6 black and 7 white balls....

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  4. There are two groups of subjects one of which consists of 5 Science an...

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  5. Three integers are chosen at random without replacement from the first...

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  6. Three bags contains 3 red, 4 black balls, 4 red, 5 black balls, 5 red ...

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  7. There are 2 white , 4 black balls in urn A, In urn B, there are 5 whit...

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  8. A urn A contains 3 white and 5 black balls. Another urn B contains 6 w...

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  9. Bag A contains 2 red, 3 black balss. Bag B contains 3 red, 2 black bal...

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  10. Bag A contains 2 red, 3 black balss. Bag B contains 3 red, 2 black bal...

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  11. Um A contains 6 red and 4 black balls and um B contains 4 red and 6 bl...

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  12. A box contains 3 red and 7 white balls. One ball is drawn at random an...

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  13. A bag contains 5 red , 3 black ball, and another bag contains 4 red an...

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  14. A bag contains 16 coins of which two are counterfeit with heads on bot...

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  15. A is one of 6 horses entered for a race and is to be ridden by one of ...

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  16. A is one of 6 horses entered for a race and is to be ridden by one of ...

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  17. A bag contains 6 white and 4 black balls.A fair die is rolled and a nu...

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

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

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

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