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An urn contains 7 red and 4 blue balls. ...

An urn contains 7 red and 4 blue balls. Two balls redrawn at random with replacement.  Find the probability of getting 2 red balls 2 blue balls one red and one blue ball.

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  2. A bag contains 8 marbles of which 3 are blue and 5 are red. One marble...

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  3. An urn contains 7 red and 4 blue balls. Two balls redrawn at random ...

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  6. A bag contains 3 white and 2 black balls and another bag contains 2 ...

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  7. A bag A contains 4 black and 6 red balls and bag B contains 7 black a...

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  8. A person has undertaken a construction job. The probabilities are 0...

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  9. A bag A contains 5 white and 6 black balls. Another bag B contains 4 ...

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  10. A purse contains 2 silver and 4 copper coins. A second purse contains ...

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  11. One bag contains 4 yellow and 5 red balls. Another bag contains 6 y...

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  12. The contents of three bags, I, II and III are s follows: Bag I:1 white...

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  13. A unbiased coin is tossed. If the result is a head a pair of unbiased ...

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  14. The bag A contains 8 white and 7 black balls while the bag B contains ...

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  15. A bag contains 4 white and 5 black balls and another bag contains 3 ...

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  16. An urn contains 10 white and 3 black balls.Another urn contains 3 whit...

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  17. Three machinesE1, E2 and E3 in a certain factory producing electric...

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  18. In a factory which manufactures bolts, machines A. B and C manufacture...

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  19. Three urns contain 6 red, 4 black 4 red, 6 black and 5 red, 5 black ...

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  20. An insurance company insured 2000 scooter drivers, 4000 car drivers ...

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