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A is a set containing n different elemen...

`A` is a set containing `n` different elements. A subset `P` of `A` is chosen. The set `A` is reconstructed by replacing the elements of `P`. A subset `Q` of `A` is again chosen. The number of ways of choosing `P` and `Q` so that `PnnQ` contains exactly two elements is a. `.^n C_3xx2^n` b. `.^n C_2xx3^(n-2)` c. `3^(n-1)` d. none of these

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CENGAGE PUBLICATION-PROBABILITY-All Questions
  1. If n integers taken at random are multiplied together , then the p...

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  2. A fair die is thrown 20 times. The probability that on the 10th thro...

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  3. A is a set containing n different elements. A subset P of A is chosen....

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  4. If a fair coin is tossed thrice find the probability that there are ...

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  5. Consider f(x) =x^3+ax^2+bx+c Parameters a, b, c are chosen as the face...

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  6. A dice is thrown once. Find the pobability of getting a prime number.

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  7. In a knockout tournament, 2^(n) equally skilld players, S(1), S(2), …,...

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  8. Let Aa n dB be two events such that P(A)=3//5a n dP(B)=2//3. Then Stat...

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  9. The total number of ways in which 5 balls of different colours can be ...

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  10. A single which can can be green or red with probability 4/5 and 1/5 re...

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  11. Thirty two players ranked 1 to 32 are playing is a knockout tournament...

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  12. Two different numbers are taken from the set {0,1,2,3,4,5,6,7,8,9,10}d...

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  13. Two events A and B have probabilities 0.25 and 0.50 respectively the p...

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  14. The probability of happening an event A in one trial is 0.4. Find the ...

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  15. An unbiased die is thrown twice. Let the event A be "odd number on ...

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  16. If A and B are two events such that P(A)>0a n d P(B)!=1, t h e nP( b...

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  17. A single letter is selected at random from the word probability. The p...

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  18. A bag contains some white and some black balls, all combinations of ba...

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  19. (AuuB)' is equal to, (a)(A'uuB') (b)(A 'nnB ') (c)(A nnB) (d)(AuuB)

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  20. The minimum number of times a fair coin needs to be tossed, so that th...

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