Răspuns :
[1+2+3+...+100]+[-1-2-3-...-103]
⇒[100·101/2]+[-103·104/2]
⇒[50·101]+[-103·52]
⇒5050+[-5356]
⇒-[5356-5050]
⇒-306;
⇒[100·101/2]+[-103·104/2]
⇒[50·101]+[-103·52]
⇒5050+[-5356]
⇒-[5356-5050]
⇒-306;
(1+100)*100/2 + (-1-103)*103/2=
=101*50 + (-104)* 103/2=
=5050 -52*103=
=5050-5356=
= -306
=101*50 + (-104)* 103/2=
=5050 -52*103=
=5050-5356=
= -306