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Nr care au cifra unitatilor mai mare decât cifra zecilor

Răspuns :

12,13,14,15,16,17,18,19,23,24,25,26,27,28,29,34,35,36,37,3/8,39,45,46,47,48,49,56,57,58,59,67,68,69,78,79,89,
ab, b>a
12,.....,19,23,.....,29,34,35,........39,45,......,49,56,......,59,67,68,69,78,79,89.