Răspuns:
a:11=19
11*19=209
11*19+1=210
11*19+2=211
11*19+3=212
11*19+4=213
11*19+5=214
11*19+6=215
11*19+7=216
11*19+8=217
11*19+9=218
11*19+10=219
a={209,210,211,212,213,214,215,216,217,218,219}
2++09+210+211+212+213+214+215+215+216+217+218+219=209+210+211+212+213+214++215+216+217+218+219=4454(Nu am mai facut calculul aici, l-am facut pe calculator si l-am transcris)=>Rezultatul este 4454.
