算24点——7、8、9、3

来源:百度知道 编辑:UC知道 时间:2024/07/08 04:40:57
7、8、9、3四个数算24点(加、减、乘、除还有平方以及开根都可以)
注意:要两种方法,两种方法的思路不同

1: (7 - 8 + 9) × 3
2: ((7 - 8) + 9) × 3
3: (7 - (8 - 9)) × 3
4: (7 + 9 - 8) × 3
5: ((7 + 9) - 8) × 3
6: (7 + (9 - 8)) × 3
7: (9 + 7 - 8) × 3
8: ((9 + 7) - 8) × 3
9: (9 + (7 - 8)) × 3
10: (9 - 8 + 7) × 3
11: ((9 - 8) + 7) × 3
12: (9 - (8 - 7)) × 3
13: 3 × (7 - 8 + 9)
14: 3 × ((7 - 8) + 9)
15: 3 × (7 - (8 - 9))
16: 3 × (7 + 9 - 8)
17: 3 × ((7 + 9) - 8)
18: 3 × (7 + (9 - 8))
19: 3 × (9 + 7 - 8)
20: 3 × ((9 + 7) - 8)
21: 3 × (9 + (7 - 8))
22: 3 × (9 - 8 + 7)
23: 3 × ((9 - 8) + 7)
24: 3 × (9 - (8 - 7))

1: (7 - 8 + 9) × 3
2: ((7 - 8) + 9) × 3
3: (7 - (8 - 9)) × 3
4: (7 + 9 - 8) × 3
5: ((7 + 9) - 8) × 3
6: (7 + (9 - 8)) × 3
7: (9 + 7 - 8) × 3
8: ((9 + 7) - 8) × 3
9: (9 + (7 - 8)) × 3
10: (9 - 8 + 7) × 3
11: ((9 - 8) + 7) × 3
12: (9 - (8 - 7)) × 3
13: 3 × (7 - 8 + 9)
14: