Răspuns:
122, 202, 212 , 232 , 242 , 252, 262 , 272, ,282 , 292 , 220, 221, 223, 224, 225, 226, 227, 228, 229, 322, 422, 522, 622, 722, 822, 922
a,b,c=0,1,2,3...9
a≠0
a=b,b=c,a=c
a=b=2 => c=0,1,2..9 → 9 numere
a=c=2 => b=0,1,2...9 → 9 numere
b=c unde a≠0 => a=1,2,3...9 →8 numere
9×2+8=26 numere
