1224算24怎么算？

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