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Thread: 9s

  1. #1
    Expert Member
    Join Date
    Jun 2006
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    410

    9s

    How many numbers are there in the list 1, 2, 3, 4, 5, …, 10 000 which
    contain exactly two consecutive 9’s such as 993, 1992 and 9929 but NOT
    9295 or 1999?


  2. #2
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Smile Re: 9s

    Totally 261 consecutive 9's are there...

    -------------------
    suresh


  3. #3
    Expert Member
    Join Date
    Jun 2006
    Answers
    410

    Re: 9s

    Very correct Answer. Please leave solution here.


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