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Popmatei26
a fost răspuns

2+4+6....+98+100=? metoda Gauss

Răspuns :

2 ( 1+2+3+...+50)
2(50x51:2)
2x25x51=2550
[tex][tex]2+4+6....+98+100= \\ 2(1+2+3+...+50)= \\ 2 \frac{50(50+1)}{2}= 51x50=2550[/tex]