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sa se calculeze suma primelor 2016 numere naturale pare consecutive


Răspuns :

2016/2=1008 numere pare pana la 2016
2+4+6+...+2012+2014+2016=(2+2016)+(4+2014)+(6+2012)+....+(1008+1010)=1008/2×(2018)=504×2008= 1017072