1.2, 7, 12, 17, ... 2. 162, 54, 18, 6, ... 3. 4, 8, 16, 32, . 4. -28, -16, -4, 8,.. 5.0.4, 0.04, 0.004, .. A 1 1 1 1 10'15 20' 25 **. 7.,2;8,.. 1 1 1 8. 1 91 g 25 49​