Question

2.4.5.9算成24

2.4.5.9算成24
两种解法

Answer 1

(2+4)×(9-5)

4×(9-(5-2))

搜索“24点计算”，随便找个网站就能帮你算了

Answer 2

共有3个方法哦！
2,4,5,9由此4个数字算出24
1:(9+5)*2-4
2:((9+2)-5)*4
3:(9-5)*(4+2)

Answer 3

1: (2 + 4) × (9 - 5)
2: (2 - 5 + 9) × 4
3: ((2 - 5) + 9) × 4
4: (2 - (5 - 9)) × 4
5: (2 × (5 + 9)) - 4
6: 2 × (5 + 9) - 4
7: (2 + 9 - 5) × 4
8: ((2 + 9) - 5) × 4
9: (2 + (9 - 5)) × 4
10: (2 × (9 + 5)) - 4
11: 2 × (9 + 5) - 4
12: 4 × (2 - 5 + 9)
13: 4 × ((2 - 5) + 9)
14: 4 × (2 - (5 - 9))
15: (4 + 2) × (9 - 5)
16: 4 × (2 + 9 - 5)
17: 4 × ((2 + 9) - 5)
18: 4 × (2 + (9 - 5))
19: 4 × (9 + 2 - 5)
20: 4 × ((9 + 2) - 5)
21: 4 × (9 + (2 - 5))
22: 4 × (9 - 5 + 2)
23: 4 × ((9 - 5) + 2)
24: 4 × (9 - (5 - 2))
25: (5 + 9) × 2 - 4
26: ((5 + 9) × 2) - 4
27: (9 + 2 - 5) × 4
28: ((9 + 2) - 5) × 4
29: (9 + (2 - 5)) × 4
30: (9 + 5) × 2 - 4
31: ((9 + 5) × 2) - 4
32: (9 - 5 + 2) × 4
33: ((9 - 5) + 2) × 4
34: (9 - (5 - 2)) × 4
35: (9 - 5) × (2 + 4)
36: (9 - 5) × (4 + 2)

Answer 4

（2+4）*（9-5）