4 8 6 8 2 July 8, 2019 16 32 64 128 4 8 6 2 8 3 4 8 6 2 mean 4 6 8 20 4 6 8 24 4 8 6 25 4 6 8 2 9 7 4 6 8 2 7 4 6 8 2 1