3 x 15 x 8 12 x 6 x 5 July 8, 2019 16 32 64 128 Tính nhanh 3 x 15 x 8 12 x 6 x 5 X 5 15 x 6 14 x 8 12 x 3 17 =- 4 3 15 x 100
