题目

请用-2,-3,4,5算24点.
利用加、减、乘、除、乘方运算,每个数用一次,尽可能写出不同的算式.
越多越好!

提问时间：2020-08-07

答案

1:2 × (3 + 4 + 5)
2:2 × ((3 + 4) + 5)
3:2 × (3 + (4 + 5))
4:2 × (3 + 5 + 4)
5:2 × ((3 + 5) + 4)
6:2 × (3 + (5 + 4))
7:2 × (4 + 3 + 5)
8:2 × ((4 + 3) + 5)
9:2 × (4 + (3 + 5))
10:2 × (4 + 5 + 3)
11:2 × ((4 + 5) + 3)
12:2 × (4 + (5 + 3))
13:2 × (5 + 3 + 4)
14:2 × ((5 + 3) + 4)
15:2 × (5 + (3 + 4))
16:2 × (5 + 4 + 3)
17:2 × ((5 + 4) + 3)
18:2 × (5 + (4 + 3))
19:(3 - 2 + 5) × 4
20:((3 - 2) + 5) × 4
21:(3 - (2 - 5)) × 4
22:(3 + 4 + 5) × 2
23:((3 + 4) + 5) × 2
24:(3 + (4 + 5)) × 2
25:(3 + 5 - 2) × 4
26:((3 + 5) - 2) × 4
27:(3 + (5 - 2)) × 4
28:(3 + 5 + 4) × 2
29:((3 + 5) + 4) × 2
30:(3 + (5 + 4)) × 2
31:4 × (3 - 2 + 5)
32:4 × ((3 - 2) + 5)
33:4 × (3 - (2 - 5))
34:(4 + 3 + 5) × 2
35:((4 + 3) + 5) × 2
36:(4 + (3 + 5)) × 2
37:4 × (3 + 5 - 2)
38:4 × ((3 + 5) - 2)
39:4 × (3 + (5 - 2))
40:4 × (5 - 2 + 3)
41:4 × ((5 - 2) + 3)
42:4 × (5 - (2 - 3))
43:(4 + 5 + 3) × 2
44:((4 + 5) + 3) × 2
45:(4 + (5 + 3)) × 2
46:4 × (5 + 3 - 2)
47:4 × ((5 + 3) - 2)
48:4 × (5 + (3 - 2))
49:(5 - 2 + 3) × 4
50:((5 - 2) + 3) × 4
51:(5 - (2 - 3)) × 4
52:(5 + 3 - 2) × 4
53:((5 + 3) - 2) × 4
54:(5 + (3 - 2)) × 4
55:(5 + 3 + 4) × 2
56:((5 + 3) + 4) × 2
57:(5 + (3 + 4)) × 2
58:(5 + 4 + 3) × 2
59:((5 + 4) + 3) × 2
60:(5 + (4 + 3)) × 2