Question

24点游戏

24点游戏：红色扑克牌代表负数，黑色扑克牌代表正数，对于下面一组牌（2，4，7，-11），列算式

Answer 1

2*{[4平方+（-11）]+7}
如果不用平方，则此题无解

Answer 2

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

Answer 3

11 + (7 + 4 + 2)
11 + ((7 + 4) + 2)
11 + (7 + (4 + 2))
11 + 7 +(4 + 2)
(11 + 7) + (4 + 2)

Answer 4

2*{[4平方+（-11）]+7}