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Am nevoie urgent de rezolvarea sumei 1+3+5+7+...+2017. Please

Răspuns :

1 + 3 + 5 + ... + (2n - 1) = n²


2n - 1 = 2017 => 2n = 2018 => n = 1009


1 + 3 + 5 + ... + 2017 = (1009)² = 1018081