4 X 5 X 68 X 6 X 5 = 4 8 X X 5 6 X X 5 6 = 4 8 = 1 2

Câu 7: 4 x 5 x 6

8 x 6 x 5 = 4 8 x x 5 6 x x 5 6 = 4 8 = 1 2