13,5,12,4,经过怎样的运算才能得到24?

题目

13,5,12,4,经过怎样的运算才能得到24?

答案

3 + 4 × 7) - 7
3:(3 + (4 × 7)) - 7
4:3 + (4 × 7) - 7
5:3 + (4 × 7 - 7)
6:3 + ((4 × 7) - 7)
7:3 - (4 - 7) × 7
8:3 - ((4 - 7) × 7)
9:3 + (7 - 4) × 7
10:3 + ((7 - 4) × 7)
11:3 + 7 × 4 - 7
12:(3 + 7 × 4) - 7
13:(3 + (7 × 4)) - 7
14:3 + (7 × 4) - 7
15:3 + (7 × 4 - 7)
16:3 + ((7 × 4) - 7)
17:3 - 7 + 4 × 7
18:(3 - 7) + 4 × 7
19:3 - 7 +(4 × 7)
20:(3 - 7) + (4 × 7)
21:3 - (7 - 4 × 7)
22:3 - (7 - (4 × 7))
23:3 - (7 × (4 - 7))
24:3 - 7 ×(4 - 7)
25:3 × 7 - 4 + 7
26:(3 × 7) - 4 + 7
27:(3 × 7 - 4) + 7
28:((3 × 7) - 4) + 7
29:3 × 7 -(4 - 7)
30:(3 × 7) - (4 - 7)
31:3 + (7 × (7 - 4))
32:3 + 7 ×(7 - 4)
33:3 - 7 + 7 × 4
34:(3 - 7) + 7 × 4
35:3 - 7 +(7 × 4)
36:(3 - 7) + (7 × 4)
37:3 - (7 - 7 × 4)
38:3 - (7 - (7 × 4))
39:3 × 7 + 7 - 4
40:(3 × 7) + 7 - 4
41:(3 × 7 + 7) - 4
42:((3 × 7) + 7) - 4
43:3 × 7 +(7 - 4)
44:(3 × 7) + (7 - 4)
45:4 × 7 + 3 - 7
46:(4 × 7) + 3 - 7
47:(4 × 7 + 3) - 7
48:((4 × 7) + 3) - 7
49:4 × 7 +(3 - 7)
50:(4 × 7) + (3 - 7)
51:4 × 7 - 7 + 3
52:(4 × 7) - 7 + 3
53:(4 × 7 - 7) + 3
54:((4 × 7) - 7) + 3
55:4 × 7 -(7 - 3)
56:(4 × 7) - (7 - 3)
57:7 × 3 - 4 + 7
58:(7 × 3) - 4 + 7
59:(7 × 3 - 4) + 7
60:((7 × 3) - 4) + 7
61:7 × 3 -(4 - 7)
62:(7 × 3) - (4 - 7)
63:7 + 3 × 7 - 4
64:(7 + 3 × 7) - 4
65:(7 + (3 × 7)) - 4
66:7 + (3 × 7) - 4
67:7 + (3 × 7 - 4)
68:7 + ((3 × 7) - 4)
69:(7 - 3) × 7 - 4
70:((7 - 3) × 7) - 4
71:7 × 3 + 7 - 4
72:(7 × 3) + 7 - 4
73:(7 × 3 + 7) - 4
74:((7 × 3) + 7) - 4
75:7 × 3 +(7 - 4)
76:(7 × 3) + (7 - 4)
77:7 - 4 + 3 × 7
78:(7 - 4) + 3 × 7
79:7 - 4 +(3 × 7)
80:(7 - 4) + (3 × 7)
81:7 - (4 - 3 × 7)
82:7 - (4 - (3 × 7))
83:7 × 4 + 3 - 7
84:(7 × 4) + 3 - 7
85:(7 × 4 + 3) - 7
86:((7 × 4) + 3) - 7
87:7 × 4 +(3 - 7)
88:(7 × 4) + (3 - 7)
89:7 - 4 + 7 × 3
90:(7 - 4) + 7 × 3
91:7 - 4 +(7 × 3)
92:(7 - 4) + (7 × 3)
93:7 - (4 - 7 × 3)
94:7 - (4 - (7 × 3))
95:(7 - 4) × 7 + 3
96:((7 - 4) × 7) + 3
97:7 × 4 - 7 + 3
98:(7 × 4) - 7 + 3
99:(7 × 4 - 7) + 3
100:((7 × 4) - 7) + 3
101:7 × 4 -(7 - 3)
102:(7 × 4) - (7 - 3)
103:7 + 7 × 3 - 4
104:(7 + 7 × 3) - 4
105:(7 + (7 × 3)) - 4
106:7 + (7 × 3) - 4
107:7 + (7 × 3 - 4)
108:7 + ((7 × 3) - 4)
109:(7 × (7 - 3)) - 4
110:7 × (7 - 3) - 4
111:(7 × (7 - 4)) + 3
112:7 × (7 - 4) + 3