Question

4,9,12,2，怎么算24点？

Answer 1

1: 4 × (2 × 9 - 12)
2: 4 × ((2 × 9) - 12)
3: 4 × (2 × (12 - 9))
4: 4 × 2 ×(12 - 9)
5: (4 × 2) × (12 - 9)
6: 4 × (9 × 2 - 12)
7: 4 × ((9 × 2) - 12)
8: (4 × 9 + 12) ÷ 2
9: ((4 × 9) + 12) ÷ 2
10: (4 × (12 - 9)) × 2
11: 4 × (12 - 9) × 2
12: 4 × ((12 - 9) × 2)
13: 2 × (4 × (12 - 9))
14: 2 × 4 ×(12 - 9)
15: (2 × 4) × (12 - 9)
16: 2 × (9 + 12 ÷ 4)
17: 2 × (9 + (12 ÷ 4))
18: (2 × 9 - 12) × 4
19: ((2 × 9) - 12) × 4
20: 2 × (12 ÷ 4 + 9)
21: 2 × ((12 ÷ 4) + 9)
22: (2 × (12 - 9)) × 4
23: 2 × (12 - 9) × 4
24: 2 × ((12 - 9) × 4)
25: (9 × 4 + 12) ÷ 2
26: ((9 × 4) + 12) ÷ 2
27: (9 × 2 - 12) × 4
28: ((9 × 2) - 12) × 4
29: (9 + 12 ÷ 4) × 2
30: (9 + (12 ÷ 4)) × 2
31: (12 + 4 × 9) ÷ 2
32: (12 + (4 × 9)) ÷ 2
33: (12 ÷ 4 + 9) × 2
34: ((12 ÷ 4) + 9) × 2
35: (12 + 9 × 4) ÷ 2
36: (12 + (9 × 4)) ÷ 2
37: (12 - 9) × 4 × 2
38: ((12 - 9) × 4) × 2
39: (12 - 9) × (4 × 2)
40: (12 - 9) × 2 × 4
41: ((12 - 9) × 2) × 4
42: (12 - 9) × (2 × 4)
43: 12 ÷ (9 ÷ 2 - 4)
44: 12 ÷ ((9 ÷ 2) - 4)

Answer 2

12+2等于14、、、然后9+4就是13、、

Answer 3

4x2x(12-9)=24

Answer 4

2x4x（12-9）=24

Answer 5

（12-9）*2*4=24