Question

用3,4,1,8组成四则运算，结果等于24，要两种方法，谢谢，急！

Answer 1

4*(3+1)+8=24
(8+1-3)*4=24

Answer 2

（3-1）*（4+8）=24

追问

还有第二种方法吗？谢谢

追答

(3 + 1) × 4 + 8

Answer 3

1: (3 + 1) × 4 + 8
2: ((3 + 1) × 4) + 8
3: (3 - 1) × (4 + 8)
4: (3 - 1) × (8 + 4)
5: (4 × (3 + 1)) + 8
6: 4 × (3 + 1) + 8
7: (4 × (1 + 3)) + 8
8: 4 × (1 + 3) + 8
9: 4 × (1 - 3 + 8)
10: 4 × ((1 - 3) + 8)
11: 4 × (1 - (3 - 8))
12: 4 × (1 + 8 - 3)
13: 4 × ((1 + 8) - 3)
14: 4 × (1 + (8 - 3))
15: (4 + 8) × (3 - 1)
16: 4 × (8 - 3 + 1)
17: 4 × ((8 - 3) + 1)
18: 4 × (8 - (3 - 1))
19: 4 × (8 + 1 - 3)
20: 4 × ((8 + 1) - 3)
21: 4 × (8 + (1 - 3))
22: (1 + 3) × 4 + 8
23: ((1 + 3) × 4) + 8
24: (1 - 3 + 8) × 4
25: ((1 - 3) + 8) × 4
26: (1 - (3 - 8)) × 4
27: (1 + 8 - 3) × 4
28: ((1 + 8) - 3) × 4
29: (1 + (8 - 3)) × 4
30: 8 + (3 + 1) × 4
31: 8 + ((3 + 1) × 4)
32: (8 - 3 + 1) × 4
33: ((8 - 3) + 1) × 4
34: (8 - (3 - 1)) × 4
35: 8 + (4 × (3 + 1))
36: 8 + 4 ×(3 + 1)
37: (8 + 4) × (3 - 1)
38: 8 ÷ (4 ÷ 3 - 1)
39: 8 ÷ ((4 ÷ 3) - 1)
40: 8 + (4 × (1 + 3))
41: 8 + 4 ×(1 + 3)
42: 8 + (1 + 3) × 4
43: 8 + ((1 + 3) × 4)
44: (8 + 1 - 3) × 4
45: ((8 + 1) - 3) × 4
46: (8 + (1 - 3)) × 4

Answer 4

加减乘除都要用么 ， 还是只用几个啊