A 1 2 3 11 July 8, 2019 16 32 64 128 1 2 3 111 1 2 3 110 1 2 3 11 5 1 2 3 112 1 2 3 11 4 1 2 3 113 1 2 3 11 6 Daca a 1 2 3 11 1 2 3 11 fraction A 1 2 3 4 A 1 2 3 4 5 6 A (1 2 3) A 1 1 2