Răspuns :
33,44,55,66,77,88,99,111,222,333,444,555,666,777,888,999
30+3=33
40+4=44
50+5=55
60+6=66
70+7=77
80+8=88
90+9=99
100+10+1=111
200+20+2=222
300+30+3=333
400+40+4=444
500+50+5=555
600+60+6=666
700+70+7=777
800+80+8=888
900+90+9=999
30+3=33
40+4=44
50+5=55
60+6=66
70+7=77
80+8=88
90+9=99
100+10+1=111
200+20+2=222
300+30+3=333
400+40+4=444
500+50+5=555
600+60+6=666
700+70+7=777
800+80+8=888
900+90+9=999