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a) Cate numere naturale de trei cifre impartite la 40 dau restul 17?
b) Aflati suma acestor mere


Răspuns :

40*3= 120,120+17=137 Deci 137+ 40= 177, 177+40=217, 217+40=257, deci numerele sunt 137, 177,217,257,297,337,377,417, 457,497,517,557,597,617,657,697,717,757,797,817,857,897,917,957,997. Sunt 25 la numar. Aduna-le ca sa afli suma