1: (1 + 10) × 3 - 9
2: ((1 + 10) × 3) - 9
3: (3 × (1 + 10)) - 9
4: 3 × (1 + 10) - 9
5: (3 × (10 + 1)) - 9
6: 3 × (10 + 1) - 9
7: (10 + 1) × 3 - 9
8: ((10 + 1) × 3) - 9
1、3、9、10用加、减、乘、除如何算等于24?
1: (1 + 10) × 3 - 9
2: ((1 + 10) × 3) - 9
3: (3 × (1 + 10)) - 9
4: 3 × (1 + 10) - 9
5: (3 × (10 + 1)) - 9
6: 3 × (10 + 1) - 9
7: (10 + 1) × 3 - 9
8: ((10 + 1) × 3) - 9