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There are n letters and n addressed e...

There are `n` letters and `n` addressed envelopes. Find the probability that all the letters are not kept in the right envelope.

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CENGAGE PUBLICATION-PROBABILITY-All Questions
  1. Statement 1: a fair coin tossed 15 times, then the probability of ge...

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  2. If two events Aa n dB are such that P(A)=0. 3 ; P(B)=0. 4 ; P( A n...

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  3. There are n letters and n addressed envelopes. Find the probability...

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  4. Statement 1: if A={2,4,6,},B{1,5,3}w h e r eAa n dB are the events of ...

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  5. Match the items in column I with column II

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  6. Let Aa n dB b e two independent events. Statement 1: If P(A)=0. 3a n d...

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  7. An urn contains 9 red, 7 white, and 4 black balls if two balls are dra...

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  8. A mapping is selected at random from the set of all the mappings of ...

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  9. A six-faced dice is so biased that it is twice as likely to show an ...

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  10. The probability that a marksman will hit a target is given is 1/5. The...

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  11. Given two events A and B . If odds against A are as 2:1 and those in...

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  12. A coin is tossed (m + n) times (m gtn). Show that the probability of a...

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  13. Find the probability that birthdays of any two members out of five me...

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  14. A problem in mathematics is given to three students A ,B ,C and their ...

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  15. A successful parasite is the one which

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  16. Two cards are drawn at random and without replacement from a pack of 5...

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  17. On a Saturday night, 20% of all drivers in U.S.A. are under the influe...

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  18. The probability of getting 9 dots with two unbiased dice is

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  19. The arithmetic mean of the numbers 1, 2, 3, ...., n is

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  20. If Aa n dB each toss three coins. The probability that both get the sa...

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