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If from each of the three boxes containing 3 white and 1 black, 2 white and 2 black, 1 white and 3 black balls, one ball is drawn at random, then the probability that 2 white and 1 black balls will be drawn, is

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. For three events A ,B and C ,P (Exactly one of A or B occurs) =P (Exac...

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  2. If A and B are independent events such that P(A)=p ,\ P(B)=2p\ a n d\ ...

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  3. If from each of the three boxes containing 3 white and 1 black, 2 whit...

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  4. Four cards are drawn at a time from a pack of 52 playing cards. Find t...

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  5. A and B are two events such that P(A)=0. 25\ a n d\ P(B)=0. 50. The ...

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  6. The probabilities of a student getting I, II and III division in an ...

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  7. India plays two matches each with West Indies and Australia. In any ma...

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  8. The probability that a leap year will have 53 Fridays or 3 Saturday...

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  9. A person write 4 letters and addresses 4 envelopes. If the letters ...

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  10. A speaks truth in 75% cases and B speaks truth in 80% cases. Probab...

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  11. Three integers are chosen at random from the first 20 integers. The ...

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  12. Out of 30 consecutive integers 2 are chosen at random. The probability...

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  13. A bag contains 5 black balls, 4 white balls and 3 red balls. If a ball...

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  14. Two dice are thrown simultaneously. the probability of getting a pa...

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  15. An urn contains 9 balls two of which are red, three blue and four b...

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  16. A coin is tossed three times. Event A: two heads appear Event B: last ...

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

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  18. A box contains 10 good articles and 6 defective articles. One item ...

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  19. A box contains 6 nails and 10 nuts. Half of the nails and half of t...

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  20. A bag contains 5 brown and 4 white socks. A man pulls out two socks. ...

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