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Discussion :: Probability

  1.  I forgot the last digit of a 7-digit telephone number. If 1 randomly dial the final 3 digits after correctly dialing the first four, then what is the chance of dialing the correct number?

    2. A.

    1/999
    B.

    1/1001
    C.

    1/1000
    D.

    4/1000

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    Answer : Option C

    Explanation :

    NA

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