Răspuns:
101,102,.....,110,111,....,199,200,
201,202....,210,211,...,299,300,
301,302,....,310,311,...,399,400,
401,402,....,410,411,...,499,500,
501,502,...,510,511,...,599,600,
601,602,...,610,611,...,699,700,
701,702,...,710,711,...,799,800,
801,802,...,810,811,...,899,900,
901,902,...,910,911,...,999