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Mean of first n natural numbers is...

Mean of first n natural numbers is

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CENGAGE PUBLICATION-PROBABILITY-All Questions
  1. If Aa n dB each toss three coins. The probability that both get the sa...

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  2. If the letters of the word ‘RAMESH’ are arranged at random, what is th...

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  3. Mean of first n natural numbers is

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  4. If p is the probability that a man aged x will die in a year, then the...

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  5. If A is a 3xx3 skew-symmetric matrix, then trace of A is equal to -1 b...

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  6. If E and F two events such that P(E ∩ F) = 3/5 and P(E U F^C) = 4/5 th...

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  7. A fair coin is tossed repeatedly. If tail appears on first four tos...

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  8. A die is rolled thrice, find the probability of getting a larger nu...

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

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  10. A and B are two independent events such that P(A^C) = 0.7, P(B) = k an...

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  11. A and B are mutually independent implies P(AIB) = P(A).

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  12. The probability that at least one of the events Aa n dB occurs is 0.6....

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  13. For two given events Aa n dB ,P(AnnB)i s (a)not less than P(A)+P(B)...

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  14. The probabilities that a student passes in Mathematics,Physics and Che...

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  15. If P (E) = 0.05, what is the probability of ‘not E’?

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  16. India play two matches each with West Indies and Australia. In any ...

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  17. One hundred identical coins, each with probability 'p' of showing head...

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  18. The probability of India winning a test match against West Indies i...

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  19. An unbiased die with faced marked 1, 2, 3, 4, 5, and 6 is rolled four ...

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  20. For the three events A ,B, and C ,P (exactly one of the events A or B ...

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