Răspunsuri

Cel mai inteligent răspuns!
2014-10-01T18:58:56+03:00

S1= 1+2+3+.........+2010 = 2010×2011 /2 = 2021055

S2 = 1+2+3+...........1999= 1999×2000 / 2= 1999000

⇒ 2000+2001+............+2010 = S1 - S2 = 22055