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A bag contains 10 white and 15 black bal...

A bag contains 10 white and 15 black balls. Two balls are drawn in succession without replacement. What is the probability that first is white and second is black?

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. Two integers are selected at random from integers 1 through 11. If the...

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  2. Find the probability of drawing a diamond card in each of the two co...

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  3. A bag contains 10 white and 15 black balls. Two balls are drawn in ...

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  4. A bag contains 19 tickets, numbered from 1 to19. A ticket is drawn and...

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  5. A bag contains 5 white, 7 red and 8 black balls. If four balls are d...

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  6. Bag A contains 4 red and 5 black balls and bag B contains 3 red and 7 ...

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  7. A bag contains 5 red marbles and 3 black marbles. Three marbles are ...

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  8. Two cards are drawn from a well shuffled pack of 52 cards without r...

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  9. Two cards are drawn without replacement from a well shuffled pack of 5...

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  10. A bag contains 5 white and 3 black balls. Four balls are successively ...

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  11. Cards are numbered 1 to 25. Two cards are drawn one after the other. ...

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  12. Two dice are thrown together and the total score is noted. The event E...

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  13. Find the minimum value of f(x)=pi^2/(16 cot^-1 (-x)) - cot^-1 x

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  14. A bag contains 4 white and 2 black balls. Another contains 3 white and...

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  15. A box contains 3 red and 5 blue balls. Two balls are drawn one by one ...

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  16. Twelve balls are distributed among three boxes, find the probability ...

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  17. Two numbers b\ a n d\ c are chosen at random with replacement from the...

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  18. In how many ways three girls and nine boys can be seated in two vans, ...

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  19. What is the probability that four 'S' comes consecutively in the word ...

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  20. A basket contains 20 apples and 10 oranges out of which 5 apples and 3...

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