N 8 5n 4 6 July 8, 2019 16 32 64 128 N 8 5n 4 15 6 4n 2 N 8 2n 5n 6 3n 4 13 (n - 5 8) - (4 9 + n) 4 n+8 =56 N=5 8 9
