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The challenge involves mathematics in some central way. Also consider using more specific tags, listed in the tag wiki info.

4 votes

Reverse Engineer Polling Statistics

Python, 154 def r(l): v=0 while 1: v+=1;o=[round(y*v/100)for y in l];s=sum(o) if s: if all(a==b for a,b in zip(l,[round(y*1000/s)/10for y in o])):return s
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3 votes

Implement hyperexponentiation/tetration without the use of '^'

Python, 161 - 5 (no * operator) = 156 r=xrange def m(x,y): i=0 for n in r(y):i+=x return i def e(x,y): i=1 for n in r(1,y+1):i=m(i,x) return i def t(x,y): i=1 for n in r(y):i=e(x,i) return i …
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