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A box contains 2 red, 3 blue and 4 black...

A box contains 2 red, 3 blue and 4 black balls. Three balls are drawn at random. What is the probability that two balls are of the same colour and the third of a different colour.

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The correct Answer is:
`(55)/(84)`
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AAKASH SERIES-PROBABILITY-Additional Solved Example
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  9. A pair of dice is thrown . Find the probability that the sum is 10 or ...

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  10. A die is thrown 3 times. Find the probability of the event of getting ...

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  11. A box contains 5 black, 4 white and 6 red balls. Two balls are drawn o...

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  12. A box contains 19 screws, 3 of which are defective, Two screws are dra...

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  13. A box contains 5 red balls , 6 green balls and 7 white balls. If three...

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  14. A bag B(1) contains 4 white balls and 2 black and another bag B(2) con...

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  15. Two fair dice are rolled once. Let A be the event of getting suum 10 a...

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  16. A consignment of 15 record players contains 4 efective. The record pla...

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  17. Four persons A,B,C,D cut a pack of 52 cards successively in that order...

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  18. A bag contains 6 white balls and 4 balck balls. A ball is drawn and is...

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  19. A card from pack of 52 cards is lost. From the remaining cards of pack...

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  20. Why does it pay to bet consistently on seeing 6 at least once in 4 thr...

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