3 7 2 5 solution July 8, 2019 16 32 64 128 3 19 2 7 5 solution Y 7 3 1 3y 2 5 solution 3 5n 5 n 2 )- 7 solution N 5 5 7 2 3 solution 1 3 5 4 2 7 solution 2 + 3 + 4 + 5 + 6