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descopera regula si gasiti tote numerele
naturale ce pote urma in fiecare sir 9999991 9999919 9999199........
999999991 99999991 9999991........


Răspuns :

9999991 9999919 9999199 9991999
999999991 99999991 9999991

ACESTA ESTE RASPUNSUL CORECT : 9999991, 9999919,9999199,9991999,999999991,99999991,9999991