Question

1+2+....+2002=
Spunetimi va rog rezolvarea

Answer 1

$\displaystyle 1+2+...+2002= \\ \\ \text{Presupun ca numerele cred din 1 in 1} \\ \\ \text{Aplicam Gauss} \\ \\ \frac{n(n+1)}{2}= \frac{2002(2002+1)}{2}= \frac{\not2002 \cdot 2003}{\not2}= 2005003$

Answer 2

1+2 =3 + 1999 sper ca team ajutat