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Determinati numerele de forma 4xy barat divizibile cu : a) 2; b) 10; c) 5

Răspuns :

410 420 430 440 450 460 470 480 490 400
cu 2       400,402,404,406,408,410........498
cu5        400,405,410,415,420,425.......495
cu10      400,410,420,430,440,450,460,470,480,490,