Question

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

Answer 1

2 ( 1+2+3+...+50)
2(50x51:2)
2x25x51=2550

Answer 2

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