challenges

my solutions to various "programming challenge" problems
git clone https://wehaveforgeathome.hates.computer/challenges.git
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001.rexx (163B)

      1 #!/usr/bin/rexx
      2 
      3 sum = 0
      4 
      5 do i = 3 to 999 by 3
      6   sum = sum + i
      7 end
      8 
      9 do i = 5 to 999 by 5
     10   sum = sum + i
     11 end
     12 
     13 do i = 15 to 999 by  15
     14   sum = sum - i
     15 end
     16 
     17 say sum