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Math Help - Please help... AP problem...

  1. #1
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    Smile Please help... AP problem...

    Find the sum upto n-terms of the following series:

    {.2 + .22 + .222 + .2222 + .22222..... n-terms}

    Please help... Thanks
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  2. #2
    MHF Contributor
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    Well each term is going to have a .2, every term but the first will have a .02, every term but the 1st and 2nd will have a .002, etc.

    So the basic idea in terms of in is like: Sum = .2*n+.02(n-1)+.002*(n-2)...

    Make sense?
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