Răspuns :
1+2+3+...2016
1+2016=2017
2+2015=2017
ş.a.m.d.
2016÷2=1008
2017×1008=2000992
2000992÷1008=2017
1+2016=2017
2+2015=2017
ş.a.m.d.
2016÷2=1008
2017×1008=2000992
2000992÷1008=2017