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Thread: What's Next?

  1. #1
    Bronze Lounger Maudibe's Avatar
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    What's Next?

    1. What row of numbers comes next in this series?

    1
    11
    21
    1211
    111221
    312211
    13112221

    Must say, I could not solve this one. So I fell to the dark side and looked up the answer.

  2. #2
    5 Star Lounger
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    Looks like a strange twist on a Fibonacci...but, then again, it's not.

    I've looked at this TOOOO long. I suspect there's a trick here and it's not really mathematical.

    Maybe like the series: 42, 51, 59, 68, 77, 86, ?? What's the next number?
    You have to have been from NYC to know it's 96 -- the next stop on the Lexington Ave subway.
    Last edited by kweaver; 2013-09-10 at 01:47.

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    Bronze Lounger Maudibe's Avatar
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    Kw- now, you know I am a home grown Philly boy! More like the "L" at Frankford and Lehigh.

    mo.en- You're awesome!!

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    1
    11
    21
    1211
    111221
    312211
    13112221
    12221131112213

  6. #6
    Bronze Lounger Maudibe's Avatar
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    KKaro

    Mo.eu has the right answer

    13112221 is the last line. By examining it left to right, there is:

    one 1 (11)
    one 3 (13)
    two 1s (21)
    three 2s (32)
    one 1 (11)

    Now place them sequentially: 1113213211 is the next row

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