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Determinați toate numerele naturale de forma : 53x; x14x; 3xx; xxx; 2x5y; x≠y divizibile cu 3!!! PLESE!!!!!!!!!!

Răspuns :

530, 531,532,533,534,535,536,537,538,539
1141,2142,3143,4144,5145,6146,7147,8148,9149
311,322,333,344,355,366,377,388,399
111;222;333;444;555;666;777;888;999
2151,2252,2353,2454,2555,2656,2757,2858,2959