3) Fie grupurile de câte trei iruri de numere naturale. Stabile te o regul pentru a g si cu ce num r trebuie completat c su a goal: a) 1, 2, 5, 10, 19, 25, 28, O 2, 2, 6, 4, 6, 4, 1, 6, 7 3, 5, 11, 13, 7, 9, 15 b) 1, 5, 9, 15, 25, 34, 19, O 2, 4, 8, 9, 11, 14, 21 3, 5, 7, 16, 23, 5, 2 c) 1, 6, 13, 19, 29, 36, 2, 3, 1, 4, 5, 7, 2 3, 4, 5, 6, 2, 3, 8 6, O 46,​