题目

用5.4.9.3四个数怎样运算才得到24点

提问时间：2020-06-13

答案

5, 4, 9, 3的24点答案：
1: (5 × 3 - 9) × 4
2: ((5 × 3) - 9) × 4
3: (4 - 5 + 9) × 3
4: ((4 - 5) + 9) × 3
5: (4 - (5 - 9)) × 3
6: 4 × (5 × 3 - 9)
7: 4 × ((5 × 3) - 9)
8: (4 + 9 - 5) × 3
9: ((4 + 9) - 5) × 3
10: (4 + (9 - 5)) × 3
11: 4 × (3 × 5 - 9)
12: 4 × ((3 × 5) - 9)
13: (9 - 5 + 4) × 3
14: ((9 - 5) + 4) × 3
15: (9 - (5 - 4)) × 3
16: (9 + 4 - 5) × 3
17: ((9 + 4) - 5) × 3
18: (9 + (4 - 5)) × 3
19: (3 × 5 - 9) × 4
20: ((3 × 5) - 9) × 4
21: 3 × (4 - 5 + 9)
22: 3 × ((4 - 5) + 9)
23: 3 × (4 - (5 - 9))
24: 3 × (4 + 9 - 5)
25: 3 × ((4 + 9) - 5)
26: 3 × (4 + (9 - 5))
27: 3 × (9 - 5 + 4)
28: 3 × ((9 - 5) + 4)
29: 3 × (9 - (5 - 4))
30: 3 × (9 + 4 - 5)
31: 3 × ((9 + 4) - 5)
32: 3 × (9 + (4 - 5))