2个7,1个5,1个9算24点

2个7,1个5,1个9算24点
2个7,1个5,1个9算24点

2个7,1个5,1个9算24点
7+(7-5)*9

(7+5)*(9-7)=24

（7+5）*（9-7）=24

24=1*24=2*12=3*8=4*6
7+5=12
9-7=2,
所以，(7+5)*(9-7)=24

(7+5)*(9-7)=24

9减7得2，5加7得12，12乘2

1: (7 + 5) × (9 - 7)
2: (5 + 7) × (9 - 7)
3: (9 - 7) × (7 + 5)
4: (9 - 7) × (5 + 7)

1: 7 + 7 + 1 + 9
2: (7 + 7) + 1 + 9
3: (7 + 7 + 1) + 9
4: ((7 + 7) + 1) + 9
5: (7 + (7 + 1)) + 9
6: 7 + (7 + 1) + 9
7: 7 + (7 + 1 + 9)
8: 7 + ((7 + 1) + 9)
9: ...

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

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