2 3 5 7 算24点 快

3*5+2+7=24

3*7+5-2=24

简单来说，就两种：
3*5+7+2
3*7+5-2
(5-2)*7+3原理和上一种一样，都是基于21+3的，可视为一种。

（-2+5）+3*7=24和3x7+5-2 、3乘5加2加7

1:2 + 7 + 3 × 5
2:(2 + 7) + 3 × 5
3:2 + (7 + 3 × 5)
4:2 + (7 + (3 × 5))
5:2 + 7 +(3 × 5)
6:(2 + 7) + (3 × 5)
7:2 + 7 + 5 × 3
8:(2 + 7) + 5 × 3
9:2 + (7 + 5 × 3)
10:2 + (7 + (5 × 3))
11:2 + 7 +(5 × 3)
12:(2 + 7) + (5 × 3)
13:2 + 3 × 5 + 7
14:(2 + 3 × 5) + 7
15:(2 + (3 × 5)) + 7
16:2 + (3 × 5) + 7
17:2 + (3 × 5 + 7)
18:2 + ((3 × 5) + 7)
19:2 + 5 × 3 + 7
20:(2 + 5 × 3) + 7
21:(2 + (5 × 3)) + 7
22:2 + (5 × 3) + 7
23:2 + (5 × 3 + 7)
24:2 + ((5 × 3) + 7)
25:7 + 2 + 3 × 5
26:(7 + 2) + 3 × 5
27:7 + (2 + 3 × 5)
28:7 + (2 + (3 × 5))
29:7 + 2 +(3 × 5)
30:(7 + 2) + (3 × 5)
31:7 + 2 + 5 × 3
32:(7 + 2) + 5 × 3
33:7 + (2 + 5 × 3)
34:7 + (2 + (5 × 3))
35:7 + 2 +(5 × 3)
36:(7 + 2) + (5 × 3)
37:7 × 3 - 2 + 5
38:(7 × 3) - 2 + 5
39:(7 × 3 - 2) + 5
40:((7 × 3) - 2) + 5
41:7 × 3 -(2 - 5)
42:(7 × 3) - (2 - 5)
43:7 + 3 × 5 + 2
44:(7 + 3 × 5) + 2
45:(7 + (3 × 5)) + 2
46:7 + (3 × 5) + 2
47:7 + (3 × 5 + 2)
48:7 + ((3 × 5) + 2)
49:7 × 3 + 5 - 2
50:(7 × 3) + 5 - 2
51:(7 × 3 + 5) - 2
52:((7 × 3) + 5) - 2
53:7 × 3 +(5 - 2)
54:(7 × 3) + (5 - 2)
55:(7 × (5 - 2)) + 3
56:7 × (5 - 2) + 3
57:7 + 5 × 3 + 2
58:(7 + 5 × 3) + 2
59:(7 + (5 × 3)) + 2
60:7 + (5 × 3) + 2
61:7 + (5 × 3 + 2)
62:7 + ((5 × 3) + 2)
63:3 - (2 - 5) × 7
64:3 - ((2 - 5) × 7)
65:3 - (7 × (2 - 5))
66:3 - 7 ×(2 - 5)
67:3 × 7 - 2 + 5
68:(3 × 7) - 2 + 5
69:(3 × 7 - 2) + 5
70:((3 × 7) - 2) + 5
71:3 × 7 -(2 - 5)
72:(3 × 7) - (2 - 5)
73:3 + (7 × (5 - 2))
74:3 + 7 ×(5 - 2)
75:3 × 7 + 5 - 2
76:(3 × 7) + 5 - 2
77:(3 × 7 + 5) - 2
78:((3 × 7) + 5) - 2
79:3 × 7 +(5 - 2)
80:(3 × 7) + (5 - 2)
81:3 + (5 - 2) × 7
82:3 + ((5 - 2) × 7)
83:3 × 5 + 2 + 7
84:(3 × 5) + 2 + 7
85:(3 × 5 + 2) + 7
86:((3 × 5) + 2) + 7
87:3 × 5 +(2 + 7)
88:(3 × 5) + (2 + 7)
89:3 × 5 + 7 + 2
90:(3 × 5) + 7 + 2
91:(3 × 5 + 7) + 2
92:((3 × 5) + 7) + 2
93:3 × 5 +(7 + 2)
94:(3 × 5) + (7 + 2)
95:5 - 2 + 7 × 3
96:(5 - 2) + 7 × 3
97:5 - 2 +(7 × 3)
98:(5 - 2) + (7 × 3)
99:5 - (2 - 7 × 3)
100:5 - (2 - (7 × 3))
101:(5 - 2) × 7 + 3
102:((5 - 2) × 7) + 3
103:5 - 2 + 3 × 7
104:(5 - 2) + 3 × 7
105:5 - 2 +(3 × 7)
106:(5 - 2) + (3 × 7)
107:5 - (2 - 3 × 7)
108:5 - (2 - (3 × 7))
109:5 + 7 × 3 - 2
110:(5 + 7 × 3) - 2
111:(5 + (7 × 3)) - 2
112:5 + (7 × 3) - 2
113:5 + (7 × 3 - 2)
114:5 + ((7 × 3) - 2)
115:5 × 3 + 2 + 7
116:(5 × 3) + 2 + 7
117:(5 × 3 + 2) + 7
118:((5 × 3) + 2) + 7
119:5 × 3 +(2 + 7)
120:(5 × 3) + (2 + 7)
121:5 + 3 × 7 - 2
122:(5 + 3 × 7) - 2
123:(5 + (3 × 7)) - 2
124:5 + (3 × 7) - 2
125:5 + (3 × 7 - 2)
126:5 + ((3 × 7) - 2)
127:5 × 3 + 7 + 2
128:(5 × 3) + 7 + 2
129:(5 × 3 + 7) + 2
130:((5 × 3) + 7) + 2
131:5 × 3 +(7 + 2)
132:(5 × 3) + (7 + 2)