Răspuns :
S = 1+8+15+22+29+...+2010 n= (2010 -1) :7+1
n= 288
S= 2010 +2003+1996+.....+1
2S= 2011 +2011+2011+......+2011
2S= 2011x 288
2S =579.168
S=298.584
n= 288
S= 2010 +2003+1996+.....+1
2S= 2011 +2011+2011+......+2011
2S= 2011x 288
2S =579.168
S=298.584