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The probability that out of 10 person, a...

The probability that out of 10 person, all born in June, at least two have the same birthday is

A

`(""^(30)C_(10))/((30)^(10))`

B

`1-(""^(30)C_(10))/(30!)`

C

`(30^(10)-""^(30)C_(10))/((30)^(10))`

D

None of these

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • In an assembly of 4 persons the probability that at least 2 of them have the same birthday is

    A
    0.293
    B
    0.24
    C
    0.0001
    D
    0.016
  • In an assembly of 4 persons the probability that at least 2 of them have the same birthday is

    A
    0.293
    B
    0.24
    C
    0.0001
    D
    0.016
  • In an assembly of 4 persons the probability that atleast 2 of them have the same birthday, is

    A
    `0.293`
    B
    `0.24`
    C
    `0.0001`
    D
    `0.016`
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