5，9，2，10算24点

5, 9, 2, 10的24点答案：

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