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The probability that a student is not a ...

The probability that a student is not a swimmer is `1/5`. Then the probability that out of five students, four are swimmers is:

A

`""^5C_4(4/5)^4 1/5`

B

`(4/5)^4 1/5`

C

`""^5C_1 1/5(4/5)^4`

D

none of these

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MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. Suppose that two cards are drawn at random from a deck of cards. Let X...

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  2. In a box containing 100 bulbs, 10 are defective. The probability that ...

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  3. The probability that a student is not a swimmer is 1/5. Then the prob...

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  4. A die is thrown once, then the probability of getting a number greater...

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  5. If P(A)=0.2, P(B)=0.4, P(AuuB)=0.6 , then P(A//B) is equal to

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  6. Let A and B be two events. If P(A)=0.6, P(B)=0.2, P(A/B)=0.5, then P(A...

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  7. If A and B are independent events such that 0 lt P (A) lt 1 and 0 lt P...

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  8. Let 'X' be a discrete random variable. The probability distribution of...

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  9. Let 'X' be a discrete random variable assuming values x1, x2, ...........

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  10. Two events A and B will be independent, if:

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  11. If A and B are two events such that AcapBnephi, P((A)/(B))=P((B)/(A))...

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  12. If P(E)=11/36, P(F)=5/36 and P(EnnF)=2/36, then the value of P(E/F) is...

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

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  14. An urn contains 10 black and 5 white balls. Two balls are drawn from t...

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  15. Probability distribution of X is given below, then the value of K is ...

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  16. If A and B are any two events such that : P(A) + P(B) – P(A and B) = P...

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  17. In a single throw of a pair od die, the probability of getting total o...

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  18. A and B are two mutually exclusive events of an experiment. If P (not ...

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  19. P(E/F) is equal to :

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  20. If P(A)=0.3, P(B)=0.4, find P(AuuB). where A and B are independent eve...

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