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  1. Prepare
  2. Mathematics
  3. Fundamentals
  4. Summing the N series
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Summing the N series

  • tim_mccaughey
     + 0 comments

    This is a telescoping series: https://en.wikipedia.org/wiki/Telescoping_series

    Accordingly,

    def summingSeries(n):
    return (n * *2) % (10**9 + 7)