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  1. from random import randint, sample
  2.  
  3. s = []
  4. for i in xrange(100000):
  5.   r = randint(1,81)
  6.   a = ([True] * r) + ([False] * (81 - r))
  7.   b = sample(a, 9)
  8.   if b[0] and b.count(True) == 3:
  9.     s.append(r)
  10.  
  11. print float(sum(s)) / len(s)
Success #stdin #stdout 0.13s 120576KB
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29.0976977568
https://ideone.com/p3YigD
language:
Python (PyPy 2.7.13)
created:
6 years ago
visibility:
public

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