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By: a guest on Jul 10th, 2012  |  syntax: None  |  size: 0.21 KB  |  hits: 13  |  expires: Never
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  1. def obongo (n):
  2.     for i in range (1,n):
  3.         if n==(i*(i+1)):
  4.             return True
  5.         if n!=(i*(i+1)):
  6.             return False
  7.         i=i+1
  8.  
  9. n=int(raw_input('ingrese numero'))
  10. print obongo (n)