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scrie toate numerele de doua cifre care au cifra zecilor mai mica decat cifra unitatilor

Răspuns :

12, 13, 14, 15, 16, 17, 18, 19,23,24,25,26,27,28,29,34,35,36,37,38,39,45,46,47,48,49,56,57,58,59,67,68,69,78,79,89
12 ,13 ,14 ,15 ,16 ,17 ,18, 19 ,23 ,24 ,25 ,26 ,27 ,28 ,29, 34, 35 ,36 ,37 ,38 ,39 ,45 ,46, 47 ,48 ,49 ,56 ,57 ,58 ,59 ,67 ,68 ,69 ,78 ,79 ,89