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A bag contains 4 white and 7 black and 5...

A bag contains 4 white and 7 black and 5 red balls. 4 balls are drawn one by one with replacelment. What is the probability that at least two are white?

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PRADEEP PUBLICATION-PROBABILITY-EXERCISE
  1. A bag contains 7 red, 4 white and 5 black balls. If four balls are dra...

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  2. If getting '5' or '6' in a throw of an unbiased dice is a success and ...

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  3. A bag contains 4 white and 7 black and 5 red balls. 4 balls are drawn ...

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  4. The sum of mean and variance of a binomial distribution is 18 and sum ...

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  5. A box contains 100 tickets each bearing one of the numbers from 1 to 1...

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  6. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  7. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  8. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  9. An urn contains 25 balls of which 10 balls bear a mark 'X' and the rem...

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  10. A factory produces bulbs. The probability that any one bulb is defecti...

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  11. A factory produces bulbs. The probability that any one bulb is defecti...

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  12. A factory produces bulbs. The probability that any one bulb is defecti...

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  13. A factory produces bulbs. The probability that any one bulb is defecti...

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  14. What is the probability of sure event ?

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  15. The probability of an impossible event is

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  16. What is the number of sample points in a simple event associated with ...

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  17. If E1, E2, E3 are mutually exclusive and exhausive events then what is...

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  18. If E is an event associated with an experiment, find the value of P(E)...

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  19. A two digit number is selected at random. Find the number selected is ...

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  20. A letter from the English alphabet is seleted at random. Find the chan...

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