Cho s 1 2 3 4 5 6 abcd July 8, 2019 16 32 64 128 Cho s 1 2 3 4 5 6 abcdefg Cho s 1 2 3 4 5 6 abcdef 1 2 3 4 abcd Cho a = 2 5 b = 5 x A 1 2 3 4 5 6