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The probability that out of 10 person, all born in June, at least two have the same birthday is

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A DAS GUPTA-Elementary Probability-Exercise
  1. Three letters are written to different persons and their addresses are...

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  2. There are 4 envelops and 4 letters are to be put in these envelopes ra...

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  3. The probability that out of 10 person, all born in June, at least two ...

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  4. The probability of a leap year to have 53 Mondays is .

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  5. If two of the 64 squares are chosen at random on a chess board, the pr...

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  6. 12 people are asked questions in succession in a random order and exac...

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  7. Two numbers are selected at random from 1,2,3,....100 and are multipli...

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  8. Three dice are thrown simultaneously. The probability of obtaining a s...

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  9. Urn A contains 6 red and 4 black balls and urn B contains 4 red and 6 ...

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  10. A and B are two events such that the probability that both A and B occ...

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  11. The probabilities that on a certain day the two trains from Calcutta a...

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  12. If four whole numbers taken art random are multiplied together, the...

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  13. Three six-faced dice are thrown together. The probability that the sum...

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  14. Four small squares on a chessboard are selected at random. The probabi...

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  15. A coin is tossed three times. The probability of getting head and tail...

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  16. A room contains 3 sockets for bulbs. If from a collection of 10 bulbs,...

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  17. A bag contains 17 markers with numbers 1 to 17 . A marker is drawn at ...

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  18. Five persons entered the lift cabin on the ground floor of an 8 flo...

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  19. A card is drawn at random from a pack of 52 cards. The chance that it ...

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  20. P(A cup B)=P(A cap B) if and only if the relation between P(A) and P(B...

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