n={x+1,x+2,x+3....x+9,x+10}
5x+5+1+5x+10+1+5x+15+1+....+5x+45+1+5x+50+1=1235
50x+5+10+.....50+10=1235
50x+5+10+.....50=1235-10
50x+5+10+.....50=1225 impartim la 5
10x+1+2+....10=245
10x+10*(10+1)/2=245
10x+55=245
10x=245-55
10x=190
x=19
n={20,21,22,23,24,25,26,27,28,29}
numerel sunt :101
106
111
116
121
126
131
136
141
146
