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Discussion :: Probability

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

  2. A.

    1/1001

    B.

    1/990

    C.

    1/999

    D.

    1/1000

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    Answer : Option D

    Explanation :

    NA


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