用2、5、8、9四个数字用适当的运算符号和括号组成24,写出四种方法.

用2、5、8、9四个数字用适当的运算符号和括号组成24,写出四种方法.
用2、5、8、9四个数字用适当的运算符号和括号组成24,写出四种方法.

用2、5、8、9四个数字用适当的运算符号和括号组成24,写出四种方法.
1:2 + 5 + 8 + 9
2:(2 + 5) + 8 + 9
3:(2 + 5 + 8) + 9
4:((2 + 5) + 8) + 9
5:(2 + (5 + 8)) + 9
6:2 + (5 + 8) + 9
7:2 + (5 + 8 + 9)
8:2 + ((5 + 8) + 9)
9:2 + (5 + (8 + 9))
10:2 + 5 +(8 + 9)
11:(2 + 5) + (8 + 9)
12:2 + 5 + 9 + 8
13:(2 + 5) + 9 + 8
14:(2 + 5 + 9) + 8
15:((2 + 5) + 9) + 8
16:(2 + (5 + 9)) + 8
17:2 + (5 + 9) + 8
18:2 + (5 + 9 + 8)
19:2 + ((5 + 9) + 8)
20:2 + (5 + (9 + 8))
21:2 + 5 +(9 + 8)
22:(2 + 5) + (9 + 8)
23:2 + 8 + 5 + 9
24:(2 + 8) + 5 + 9
25:(2 + 8 + 5) + 9
26:((2 + 8) + 5) + 9
27:(2 + (8 + 5)) + 9
28:2 + (8 + 5) + 9
29:2 + (8 + 5 + 9)
30:2 + ((8 + 5) + 9)
31:2 + (8 + (5 + 9))
32:2 + 8 +(5 + 9)
33:(2 + 8) + (5 + 9)
34:(2 - 8) 脳 (5 - 9)
35:2 脳 (8 - 5 + 9)
36:2 脳 ((8 - 5) + 9)
37:2 脳 (8 - (5 - 9))
38:2 + 8 + 9 + 5
39:(2 + 8) + 9 + 5
40:(2 + 8 + 9) + 5
41:((2 + 8) + 9) + 5
42:(2 + (8 + 9)) + 5
43:2 + (8 + 9) + 5
44:2 + (8 + 9 + 5)
45:2 + ((8 + 9) + 5)
46:2 + (8 + (9 + 5))
47:2 + 8 +(9 + 5)
48:(2 + 8) + (9 + 5)
49:2 脳 (8 + 9 - 5)
50:2 脳 ((8 + 9) - 5)
51:2 脳 (8 + (9 - 5))
52:2 + 9 + 5 + 8
53:(2 + 9) + 5 + 8
54:(2 + 9 + 5) + 8
55:((2 + 9) + 5) + 8
56:(2 + (9 + 5)) + 8
57:2 + (9 + 5) + 8
58:2 + (9 + 5 + 8)
59:2 + ((9 + 5) + 8)
60:2 + (9 + (5 + 8))
61:2 + 9 +(5 + 8)
62:(2 + 9) + (5 + 8)
63:2 脳 (9 - 5 + 8)
64:2 脳 ((9 - 5) + 8)
65:2 脳 (9 - (5 - 8))
66:2 + 9 + 8 + 5
67:(2 + 9) + 8 + 5
68:(2 + 9 + 8) + 5
69:((2 + 9) + 8) + 5
70:(2 + (9 + 8)) + 5
71:2 + (9 + 8) + 5
72:2 + (9 + 8 + 5)
73:2 + ((9 + 8) + 5)
74:2 + (9 + (8 + 5))
75:2 + 9 +(8 + 5)
76:(2 + 9) + (8 + 5)
77:2 脳 (9 + 8 - 5)
78:2 脳 ((9 + 8) - 5)
79:2 脳 (9 + (8 - 5))
80:5 + 2 + 8 + 9
81:(5 + 2) + 8 + 9
82:(5 + 2 + 8) + 9
83:((5 + 2) + 8) + 9
84:(5 + (2 + 8)) + 9
85:5 + (2 + 8) + 9
86:5 + (2 + 8 + 9)
87:5 + ((2 + 8) + 9)
88:5 + (2 + (8 + 9))
89:5 + 2 +(8 + 9)
90:(5 + 2) + (8 + 9)
91:5 + 2 + 9 + 8
92:(5 + 2) + 9 + 8
93:(5 + 2 + 9) + 8
94:((5 + 2) + 9) + 8
95:(5 + (2 + 9)) + 8
96:5 + (2 + 9) + 8
97:5 + (2 + 9 + 8)
98:5 + ((2 + 9) + 8)
99:5 + (2 + (9 + 8))
100:5 + 2 +(9 + 8)
101:(5 + 2) + (9 + 8)
102:5 + 8 + 2 + 9
103:(5 + 8) + 2 + 9
104:(5 + 8 + 2) + 9
105:((5 + 8) + 2) + 9
106:(5 + (8 + 2)) + 9
107:5 + (8 + 2) + 9
108:5 + (8 + 2 + 9)
109:5 + ((8 + 2) + 9)
110:5 + (8 + (2 + 9))
111:5 + 8 +(2 + 9)
112:(5 + 8) + (2 + 9)
113:5 + 8 + 9 + 2
114:(5 + 8) + 9 + 2
115:(5 + 8 + 9) + 2
116:((5 + 8) + 9) + 2
117:(5 + (8 + 9)) + 2
118:5 + (8 + 9) + 2
119:5 + (8 + 9 + 2)
120:5 + ((8 + 9) + 2)
121:5 + (8 + (9 + 2))
122:5 + 8 +(9 + 2)
123:(5 + 8) + (9 + 2)
124:5 + 9 + 2 + 8
125:(5 + 9) + 2 + 8
126:(5 + 9 + 2) + 8
127:((5 + 9) + 2) + 8
128:(5 + (9 + 2)) + 8
129:5 + (9 + 2) + 8
130:5 + (9 + 2 + 8)
131:5 + ((9 + 2) + 8)
132:5 + (9 + (2 + 8))
133:5 + 9 +(2 + 8)
134:(5 + 9) + (2 + 8)
135:(5 - 9) 脳 (2 - 8)
136:5 + 9 + 8 + 2
137:(5 + 9) + 8 + 2
138:(5 + 9 + 8) + 2
139:((5 + 9) + 8) + 2
140:(5 + (9 + 8)) + 2
141:5 + (9 + 8) + 2
142:5 + (9 + 8 + 2)
143:5 + ((9 + 8) + 2)
144:5 + (9 + (8 + 2))
145:5 + 9 +(8 + 2)
146:(5 + 9) + (8 + 2)
147:8 + 2 + 5 + 9
148:(8 + 2) + 5 + 9
149:(8 + 2 + 5) + 9
150:((8 + 2) + 5) + 9
151:(8 + (2 + 5)) + 9
152:8 + (2 + 5) + 9
153:8 + (2 + 5 + 9)
154:8 + ((2 + 5) + 9)
155:8 + (2 + (5 + 9))
156:8 + 2 +(5 + 9)
157:(8 + 2) + (5 + 9)
158:8 + 2 + 9 + 5
159:(8 + 2) + 9 + 5
160:(8 + 2 + 9) + 5
161:((8 + 2) + 9) + 5
162:(8 + (2 + 9)) + 5
163:8 + (2 + 9) + 5
164:8 + (2 + 9 + 5)
165:8 + ((2 + 9) + 5)
166:8 + (2 + (9 + 5))
167:8 + 2 +(9 + 5)
168:(8 + 2) + (9 + 5)
169:(8 - 2) 脳 (9 - 5)
170:8 + 5 + 2 + 9
171:(8 + 5) + 2 + 9
172:(8 + 5 + 2) + 9
173:((8 + 5) + 2) + 9
174:(8 + (5 + 2)) + 9
175:8 + (5 + 2) + 9
176:8 + (5 + 2 + 9)
177:8 + ((5 + 2) + 9)
178:8 + (5 + (2 + 9))
179:8 + 5 +(2 + 9)
180:(8 + 5) + (2 + 9)
181:(8 梅 (5 - 2)) 脳 9
182:8 梅 (5 - 2) 脳 9
183:8 梅 ((5 - 2) 梅 9)
184:8 + 5 + 9 + 2
185:(8 + 5) + 9 + 2
186:(8 + 5 + 9) + 2
187:((8 + 5) + 9) + 2
188:(8 + (5 + 9)) + 2
189:8 + (5 + 9) + 2
190:8 + (5 + 9 + 2)
191:8 + ((5 + 9) + 2)
192:8 + (5 + (9 + 2))
193:8 + 5 +(9 + 2)
194:(8 + 5) + (9 + 2)
195:(8 - 5 + 9) 脳 2
196:((8 - 5) + 9) 脳 2
197:(8 - (5 - 9)) 脳 2
198:8 + 9 + 2 + 5
199:(8 + 9) + 2 + 5
200:(8 + 9 + 2) + 5
201:((8 + 9) + 2) + 5
202:(8 + (9 + 2)) + 5
203:8 + (9 + 2) + 5
204:8 + (9 + 2 + 5)
205:8 + ((9 + 2) + 5)
206:8 + (9 + (2 + 5))
207:8 + 9 +(2 + 5)
208:(8 + 9) + (2 + 5)
209:8 + 9 + 5 + 2
210:(8 + 9) + 5 + 2
211:(8 + 9 + 5) + 2
212:((8 + 9) + 5) + 2
213:(8 + (9 + 5)) + 2
214:8 + (9 + 5) + 2
215:8 + (9 + 5 + 2)
216:8 + ((9 + 5) + 2)
217:8 + (9 + (5 + 2))
218:8 + 9 +(5 + 2)
219:(8 + 9) + (5 + 2)
220:(8 + 9 - 5) 脳 2
221:((8 + 9) - 5) 脳 2
222:(8 + (9 - 5)) 脳 2
223:8 脳 (9 梅 (5 - 2))
224:8 脳 9 梅(5 - 2)
225:(8 脳 9) 梅 (5 - 2)
226:9 + 2 + 5 + 8
227:(9 + 2) + 5 + 8
228:(9 + 2 + 5) + 8
229:((9 + 2) + 5) + 8
230:(9 + (2 + 5)) + 8
231:9 + (2 + 5) + 8
232:9 + (2 + 5 + 8)
233:9 + ((2 + 5) + 8)
234:9 + (2 + (5 + 8))
235:9 + 2 +(5 + 8)
236:(9 + 2) + (5 + 8)
237:9 + 2 + 8 + 5
238:(9 + 2) + 8 + 5
239:(9 + 2 + 8) + 5
240:((9 + 2) + 8) + 5
241:(9 + (2 + 8)) + 5
242:9 + (2 + 8) + 5
243:9 + (2 + 8 + 5)
244:9 + ((2 + 8) + 5)
245:9 + (2 + (8 + 5))
246:9 + 2 +(8 + 5)
247:(9 + 2) + (8 + 5)
248:9 + 5 + 2 + 8
249:(9 + 5) + 2 + 8
250:(9 + 5 + 2) + 8
251:((9 + 5) + 2) + 8
252:(9 + (5 + 2)) + 8
253:9 + (5 + 2) + 8
254:9 + (5 + 2 + 8)
255:9 + ((5 + 2) + 8)
256:9 + (5 + (2 + 8))
257:9 + 5 +(2 + 8)
258:(9 + 5) + (2 + 8)
259:(9 梅 (5 - 2)) 脳 8
260:9 梅 (5 - 2) 脳 8
261:9 梅 ((5 - 2) 梅 8)
262:9 + 5 + 8 + 2
263:(9 + 5) + 8 + 2
264:(9 + 5 + 8) + 2
265:((9 + 5) + 8) + 2
266:(9 + (5 + 8)) + 2
267:9 + (5 + 8) + 2
268:9 + (5 + 8 + 2)
269:9 + ((5 + 8) + 2)
270:9 + (5 + (8 + 2))
271:9 + 5 +(8 + 2)
272:(9 + 5) + (8 + 2)
273:(9 - 5 + 8) 脳 2
274:((9 - 5) + 8) 脳 2
275:(9 - (5 - 8)) 脳 2
276:(9 - 5) 脳 (8 - 2)
277:9 + 8 + 2 + 5
278:(9 + 8) + 2 + 5
279:(9 + 8 + 2) + 5
280:((9 + 8) + 2) + 5
281:(9 + (8 + 2)) + 5
282:9 + (8 + 2) + 5
283:9 + (8 + 2 + 5)
284:9 + ((8 + 2) + 5)
285:9 + (8 + (2 + 5))
286:9 + 8 +(2 + 5)
287:(9 + 8) + (2 + 5)
288:9 + 8 + 5 + 2
289:(9 + 8) + 5 + 2
290:(9 + 8 + 5) + 2
291:((9 + 8) + 5) + 2
292:(9 + (8 + 5)) + 2
293:9 + (8 + 5) + 2
294:9 + (8 + 5 + 2)
295:9 + ((8 + 5) + 2)
296:9 + (8 + (5 + 2))
297:9 + 8 +(5 + 2)
298:(9 + 8) + (5 + 2)
299:(9 + 8 - 5) 脳 2
300:((9 + 8) - 5) 脳 2
301:(9 + (8 - 5)) 脳 2
302:9 脳 (8 梅 (5 - 2))
303:9 脳 8 梅(5 - 2)
304:(9 脳 8) 梅 (5 - 2)