0 6 1 7 2 8 July 8, 2019 16 32 64 128 0 6 1 7 2 8 to 100 terms 0 6 x 7 1 2 x 45 1 8 0 6 x 7 1 2 x 45 1 8 tính nhanh Prove that 0 1 6 7 2 3 and 8 3 are the verticals in rectangle
