Răspuns :
daca n=2010 atunci,
S=2010+1+2010+2+2010+3+...+2010+2010 =2010*2010 + (1+2+3+...+2010) =
= 2010² + 2010*2011:2 =
= 4040100 + 1005*2011 =
= 4040100 + 2021055 = 6061155[tex]\vdots1005[/tex]
S=2010+1+2010+2+2010+3+...+2010+2010 =2010*2010 + (1+2+3+...+2010) =
= 2010² + 2010*2011:2 =
= 4040100 + 1005*2011 =
= 4040100 + 2021055 = 6061155[tex]\vdots1005[/tex]