IMO Shortlist 1977 problem 15
Dodao/la:
arhiva2. travnja 2012. In a finite sequence of real numbers the sum of any seven successive terms is negative and the sum of any eleven successive terms is positive. Determine the maximum number of terms in the sequence.
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In a finite sequence of real numbers the sum of any seven successive terms is negative and the sum of any eleven successive terms is positive. Determine the maximum number of terms in the sequence.
Izvor: Međunarodna matematička olimpijada, shortlist 1977
Školjka 
