Question

()+()+()=30

()+()+()=30

Answer 1

1: 1+1+1=3 =\= 30
2: 1+1+3=5 =\= 30
3: 1+1+5=7 =\= 30
4: 1+1+7=9 =\= 30
5: 1+1+9=11 =\= 30
6: 1+1+11=13 =\= 30
7: 1+1+13=15 =\= 30
8: 1+1+15=17 =\= 30
9: 1+3+1=5 =\= 30
10: 1+3+3=7 =\= 30
11: 1+3+5=9 =\= 30
12: 1+3+7=11 =\= 30
13: 1+3+9=13 =\= 30
14: 1+3+11=15 =\= 30
15: 1+3+13=17 =\= 30
16: 1+3+15=19 =\= 30
17: 1+5+1=7 =\= 30
18: 1+5+3=9 =\= 30
19: 1+5+5=11 =\= 30
20: 1+5+7=13 =\= 30
21: 1+5+9=15 =\= 30
22: 1+5+11=17 =\= 30
23: 1+5+13=19 =\= 30
24: 1+5+15=21 =\= 30
25: 1+7+1=9 =\= 30
26: 1+7+3=11 =\= 30
27: 1+7+5=13 =\= 30
28: 1+7+7=15 =\= 30
29: 1+7+9=17 =\= 30
30: 1+7+11=19 =\= 30
31: 1+7+13=21 =\= 30
32: 1+7+15=23 =\= 30
33: 1+9+1=11 =\= 30
34: 1+9+3=13 =\= 30
35: 1+9+5=15 =\= 30
36: 1+9+7=17 =\= 30
37: 1+9+9=19 =\= 30
38: 1+9+11=21 =\= 30
39: 1+9+13=23 =\= 30
40: 1+9+15=25 =\= 30
41: 1+11+1=13 =\= 30
42: 1+11+3=15 =\= 30
43: 1+11+5=17 =\= 30
44: 1+11+7=19 =\= 30
45: 1+11+9=21 =\= 30
46: 1+11+11=23 =\= 30
47: 1+11+13=25 =\= 30
48: 1+11+15=27 =\= 30
49: 1+13+1=15 =\= 30
50: 1+13+3=17 =\= 30
51: 1+13+5=19 =\= 30
52: 1+13+7=21 =\= 30
53: 1+13+9=23 =\= 30
54: 1+13+11=25 =\= 30
55: 1+13+13=27 =\= 30
56: 1+13+15=29 =\= 30
57: 1+15+1=17 =\= 30
58: 1+15+3=19 =\= 30
59: 1+15+5=21 =\= 30
60: 1+15+7=23 =\= 30
61: 1+15+9=25 =\= 30
62: 1+15+11=27 =\= 30
63: 1+15+13=29 =\= 30
64: 1+15+15=31 =\= 30
65: 3+1+1=5 =\= 30
66: 3+1+3=7 =\= 30
67: 3+1+5=9 =\= 30
68: 3+1+7=11 =\= 30
69: 3+1+9=13 =\= 30
70: 3+1+11=15 =\= 30
71: 3+1+13=17 =\= 30
72: 3+1+15=19 =\= 30
73: 3+3+1=7 =\= 30
74: 3+3+3=9 =\= 30
75: 3+3+5=11 =\= 30
76: 3+3+7=13 =\= 30
77: 3+3+9=15 =\= 30
78: 3+3+11=17 =\= 30
79: 3+3+13=19 =\= 30
80: 3+3+15=21 =\= 30
81: 3+5+1=9 =\= 30
82: 3+5+3=11 =\= 30
83: 3+5+5=13 =\= 30
84: 3+5+7=15 =\= 30
85: 3+5+9=17 =\= 30
86: 3+5+11=19 =\= 30
87: 3+5+13=21 =\= 30
88: 3+5+15=23 =\= 30
89: 3+7+1=11 =\= 30
90: 3+7+3=13 =\= 30
91: 3+7+5=15 =\= 30
92: 3+7+7=17 =\= 30
93: 3+7+9=19 =\= 30
94: 3+7+11=21 =\= 30
95: 3+7+13=23 =\= 30
96: 3+7+15=25 =\= 30
97: 3+9+1=13 =\= 30
98: 3+9+3=15 =\= 30
99: 3+9+5=17 =\= 30
100: 3+9+7=19 =\= 30
101: 3+9+9=21 =\= 30
102: 3+9+11=23 =\= 30
103: 3+9+13=25 =\= 30
104: 3+9+15=27 =\= 30
105: 3+11+1=15 =\= 30
106: 3+11+3=17 =\= 30
107: 3+11+5=19 =\= 30
108: 3+11+7=21 =\= 30
109: 3+11+9=23 =\= 30
110: 3+11+11=25 =\= 30
111: 3+11+13=27 =\= 30
112: 3+11+15=29 =\= 30
113: 3+13+1=17 =\= 30
114: 3+13+3=19 =\= 30
115: 3+13+5=21 =\= 30
116: 3+13+7=23 =\= 30
117: 3+13+9=25 =\= 30
118: 3+13+11=27 =\= 30
119: 3+13+13=29 =\= 30
120: 3+13+15=31 =\= 30
121: 3+15+1=19 =\= 30
122: 3+15+3=21 =\= 30
123: 3+15+5=23 =\= 30
124: 3+15+7=25 =\= 30
125: 3+15+9=27 =\= 30
126: 3+15+11=29 =\= 30
127: 3+15+13=31 =\= 30
128: 3+15+15=33 =\= 30
129: 5+1+1=7 =\= 30
130: 5+1+3=9 =\= 30
131: 5+1+5=11 =\= 30
132: 5+1+7=13 =\= 30
133: 5+1+9=15 =\= 30
134: 5+1+11=17 =\= 30
135: 5+1+13=19 =\= 30
136: 5+1+15=21 =\= 30
137: 5+3+1=9 =\= 30
138: 5+3+3=11 =\= 30
139: 5+3+5=13 =\= 30
140: 5+3+7=15 =\= 30
141: 5+3+9=17 =\= 30
142: 5+3+11=19 =\= 30
143: 5+3+13=21 =\= 30
144: 5+3+15=23 =\= 30
145: 5+5+1=11 =\= 30
146: 5+5+3=13 =\= 30
147: 5+5+5=15 =\= 30
148: 5+5+7=17 =\= 30
149: 5+5+9=19 =\= 30
150: 5+5+11=21 =\= 30
151: 5+5+13=23 =\= 30
152: 5+5+15=25 =\= 30
153: 5+7+1=13 =\= 30
154: 5+7+3=15 =\= 30
155: 5+7+5=17 =\= 30
156: 5+7+7=19 =\= 30
157: 5+7+9=21 =\= 30
158: 5+7+11=23 =\= 30
159: 5+7+13=25 =\= 30
160: 5+7+15=27 =\= 30
161: 5+9+1=15 =\= 30
162: 5+9+3=17 =\= 30
163: 5+9+5=19 =\= 30
164: 5+9+7=21 =\= 30
165: 5+9+9=23 =\= 30
166: 5+9+11=25 =\= 30
167: 5+9+13=27 =\= 30
168: 5+9+15=29 =\= 30
169: 5+11+1=17 =\= 30
170: 5+11+3=19 =\= 30
171: 5+11+5=21 =\= 30
172: 5+11+7=23 =\= 30
173: 5+11+9=25 =\= 30
174: 5+11+11=27 =\= 30
175: 5+11+13=29 =\= 30
176: 5+11+15=31 =\= 30
177: 5+13+1=19 =\= 30
178: 5+13+3=21 =\= 30
179: 5+13+5=23 =\= 30
180: 5+13+7=25 =\= 30
181: 5+13+9=27 =\= 30
182: 5+13+11=29 =\= 30
183: 5+13+13=31 =\= 30
184: 5+13+15=33 =\= 30
185: 5+15+1=21 =\= 30
186: 5+15+3=23 =\= 30
187: 5+15+5=25 =\= 30
188: 5+15+7=27 =\= 30
189: 5+15+9=29 =\= 30
190: 5+15+11=31 =\= 30
191: 5+15+13=33 =\= 30
192: 5+15+15=35 =\= 30
193: 7+1+1=9 =\= 30
194: 7+1+3=11 =\= 30
195: 7+1+5=13 =\= 30
196: 7+1+7=15 =\= 30
197: 7+1+9=17 =\= 30
198: 7+1+11=19 =\= 30
199: 7+1+13=21 =\= 30
200: 7+1+15=23 =\= 30
201: 7+3+1=11 =\= 30
202: 7+3+3=13 =\= 30
203: 7+3+5=15 =\= 30
204: 7+3+7=17 =\= 30
205: 7+3+9=19 =\= 30
206: 7+3+11=21 =\= 30
207: 7+3+13=23 =\= 30
208: 7+3+15=25 =\= 30
209: 7+5+1=13 =\= 30
210: 7+5+3=15 =\= 30
211: 7+5+5=17 =\= 30
212: 7+5+7=19 =\= 30
213: 7+5+9=21 =\= 30
214: 7+5+11=23 =\= 30
215: 7+5+13=25 =\= 30
216: 7+5+15=27 =\= 30
217: 7+7+1=15 =\= 30
218: 7+7+3=17 =\= 30
219: 7+7+5=19 =\= 30
220: 7+7+7=21 =\= 30
221: 7+7+9=23 =\= 30
222: 7+7+11=25 =\= 30
223: 7+7+13=27 =\= 30
224: 7+7+15=29 =\= 30
225: 7+9+1=17 =\= 30
226: 7+9+3=19 =\= 30
227: 7+9+5=21 =\= 30
228: 7+9+7=23 =\= 30
229: 7+9+9=25 =\= 30
230: 7+9+11=27 =\= 30
231: 7+9+13=29 =\= 30
232: 7+9+15=31 =\= 30
233: 7+11+1=19 =\= 30
234: 7+11+3=21 =\= 30
235: 7+11+5=23 =\= 30
236: 7+11+7=25 =\= 30
237: 7+11+9=27 =\= 30
238: 7+11+11=29 =\= 30
239: 7+11+13=31 =\= 30
240: 7+11+15=33 =\= 30
241: 7+13+1=21 =\= 30
242: 7+13+3=23 =\= 30
243: 7+13+5=25 =\= 30
244: 7+13+7=27 =\= 30
245: 7+13+9=29 =\= 30
246: 7+13+11=31 =\= 30
247: 7+13+13=33 =\= 30
248: 7+13+15=35 =\= 30
249: 7+15+1=23 =\= 30
250: 7+15+3=25 =\= 30
251: 7+15+5=27 =\= 30
252: 7+15+7=29 =\= 30
253: 7+15+9=31 =\= 30
254: 7+15+11=33 =\= 30
255: 7+15+13=35 =\= 30
256: 7+15+15=37 =\= 30
257: 9+1+1=11 =\= 30
258: 9+1+3=13 =\= 30
259: 9+1+5=15 =\= 30
260: 9+1+7=17 =\= 30
261: 9+1+9=19 =\= 30
262: 9+1+11=21 =\= 30
263: 9+1+13=23 =\= 30
264: 9+1+15=25 =\= 30
265: 9+3+1=13 =\= 30
266: 9+3+3=15 =\= 30
267: 9+3+5=17 =\= 30
268: 9+3+7=19 =\= 30
269: 9+3+9=21 =\= 30
270: 9+3+11=23 =\= 30
271: 9+3+13=25 =\= 30
272: 9+3+15=27 =\= 30
273: 9+5+1=15 =\= 30
274: 9+5+3=17 =\= 30
275: 9+5+5=19 =\= 30
276: 9+5+7=21 =\= 30
277: 9+5+9=23 =\= 30
278: 9+5+11=25 =\= 30
279: 9+5+13=27 =\= 30
280: 9+5+15=29 =\= 30
281: 9+7+1=17 =\= 30
282: 9+7+3=19 =\= 30
283: 9+7+5=21 =\= 30
284: 9+7+7=23 =\= 30
285: 9+7+9=25 =\= 30
286: 9+7+11=27 =\= 30
287: 9+7+13=29 =\= 30
288: 9+7+15=31 =\= 30
289: 9+9+1=19 =\= 30
290: 9+9+3=21 =\= 30
291: 9+9+5=23 =\= 30
292: 9+9+7=25 =\= 30
293: 9+9+9=27 =\= 30
294: 9+9+11=29 =\= 30
295: 9+9+13=31 =\= 30
296: 9+9+15=33 =\= 30
297: 9+11+1=21 =\= 30
298: 9+11+3=23 =\= 30
299: 9+11+5=25 =\= 30
300: 9+11+7=27 =\= 30
301: 9+11+9=29 =\= 30
302: 9+11+11=31 =\= 30
303: 9+11+13=33 =\= 30
304: 9+11+15=35 =\= 30
305: 9+13+1=23 =\= 30
306: 9+13+3=25 =\= 30
307: 9+13+5=27 =\= 30
308: 9+13+7=29 =\= 30
309: 9+13+9=31 =\= 30
310: 9+13+11=33 =\= 30
311: 9+13+13=35 =\= 30
312: 9+13+15=37 =\= 30
313: 9+15+1=25 =\= 30
314: 9+15+3=27 =\= 30
315: 9+15+5=29 =\= 30
316: 9+15+7=31 =\= 30
317: 9+15+9=33 =\= 30
318: 9+15+11=35 =\= 30
319: 9+15+13=37 =\= 30
320: 9+15+15=39 =\= 30
321: 11+1+1=13 =\= 30
322: 11+1+3=15 =\= 30
323: 11+1+5=17 =\= 30
324: 11+1+7=19 =\= 30
325: 11+1+9=21 =\= 30
326: 11+1+11=23 =\= 30
327: 11+1+13=25 =\= 30
328: 11+1+15=27 =\= 30
329: 11+3+1=15 =\= 30
330: 11+3+3=17 =\= 30
331: 11+3+5=19 =\= 30
332: 11+3+7=21 =\= 30
333: 11+3+9=23 =\= 30
334: 11+3+11=25 =\= 30
335: 11+3+13=27 =\= 30
336: 11+3+15=29 =\= 30
337: 11+5+1=17 =\= 30
338: 11+5+3=19 =\= 30
339: 11+5+5=21 =\= 30
340: 11+5+7=23 =\= 30
341: 11+5+9=25 =\= 30
342: 11+5+11=27 =\= 30
343: 11+5+13=29 =\= 30
344: 11+5+15=31 =\= 30
345: 11+7+1=19 =\= 30
346: 11+7+3=21 =\= 30
347: 11+7+5=23 =\= 30
348: 11+7+7=25 =\= 30
349: 11+7+9=27 =\= 30
350: 11+7+11=29 =\= 30
351: 11+7+13=31 =\= 30
352: 11+7+15=33 =\= 30
353: 11+9+1=21 =\= 30
354: 11+9+3=23 =\= 30
355: 11+9+5=25 =\= 30
356: 11+9+7=27 =\= 30
357: 11+9+9=29 =\= 30
358: 11+9+11=31 =\= 30
359: 11+9+13=33 =\= 30
360: 11+9+15=35 =\= 30
361: 11+11+1=23 =\= 30
362: 11+11+3=25 =\= 30
363: 11+11+5=27 =\= 30
364: 11+11+7=29 =\= 30
365: 11+11+9=31 =\= 30
366: 11+11+11=33 =\= 30
367: 11+11+13=35 =\= 30
368: 11+11+15=37 =\= 30
369: 11+13+1=25 =\= 30
370: 11+13+3=27 =\= 30
371: 11+13+5=29 =\= 30
372: 11+13+7=31 =\= 30
373: 11+13+9=33 =\= 30
374: 11+13+11=35 =\= 30
375: 11+13+13=37 =\= 30
376: 11+13+15=39 =\= 30
377: 11+15+1=27 =\= 30
378: 11+15+3=29 =\= 30
379: 11+15+5=31 =\= 30
380: 11+15+7=33 =\= 30
381: 11+15+9=35 =\= 30
382: 11+15+11=37 =\= 30
383: 11+15+13=39 =\= 30
384: 11+15+15=41 =\= 30
385: 13+1+1=15 =\= 30
386: 13+1+3=17 =\= 30
387: 13+1+5=19 =\= 30
388: 13+1+7=21 =\= 30
389: 13+1+9=23 =\= 30
390: 13+1+11=25 =\= 30
391: 13+1+13=27 =\= 30
392: 13+1+15=29 =\= 30
393: 13+3+1=17 =\= 30
394: 13+3+3=19 =\= 30
395: 13+3+5=21 =\= 30
396: 13+3+7=23 =\= 30
397: 13+3+9=25 =\= 30
398: 13+3+11=27 =\= 30
399: 13+3+13=29 =\= 30
400: 13+3+15=31 =\= 30
401: 13+5+1=19 =\= 30
402: 13+5+3=21 =\= 30
403: 13+5+5=23 =\= 30
404: 13+5+7=25 =\= 30
405: 13+5+9=27 =\= 30
406: 13+5+11=29 =\= 30
407: 13+5+13=31 =\= 30
408: 13+5+15=33 =\= 30
409: 13+7+1=21 =\= 30
410: 13+7+3=23 =\= 30
411: 13+7+5=25 =\= 30
412: 13+7+7=27 =\= 30
413: 13+7+9=29 =\= 30
414: 13+7+11=31 =\= 30
415: 13+7+13=33 =\= 30
416: 13+7+15=35 =\= 30
417: 13+9+1=23 =\= 30
418: 13+9+3=25 =\= 30
419: 13+9+5=27 =\= 30
420: 13+9+7=29 =\= 30
421: 13+9+9=31 =\= 30
422: 13+9+11=33 =\= 30
423: 13+9+13=35 =\= 30
424: 13+9+15=37 =\= 30
425: 13+11+1=25 =\= 30
426: 13+11+3=27 =\= 30
427: 13+11+5=29 =\= 30
428: 13+11+7=31 =\= 30
429: 13+11+9=33 =\= 30
430: 13+11+11=35 =\= 30
431: 13+11+13=37 =\= 30
432: 13+11+15=39 =\= 30
433: 13+13+1=27 =\= 30
434: 13+13+3=29 =\= 30
435: 13+13+5=31 =\= 30
436: 13+13+7=33 =\= 30
437: 13+13+9=35 =\= 30
438: 13+13+11=37 =\= 30
439: 13+13+13=39 =\= 30
440: 13+13+15=41 =\= 30
441: 13+15+1=29 =\= 30
442: 13+15+3=31 =\= 30
443: 13+15+5=33 =\= 30
444: 13+15+7=35 =\= 30
445: 13+15+9=37 =\= 30
446: 13+15+11=39 =\= 30
447: 13+15+13=41 =\= 30
448: 13+15+15=43 =\= 30
449: 15+1+1=17 =\= 30
450: 15+1+3=19 =\= 30
451: 15+1+5=21 =\= 30
452: 15+1+7=23 =\= 30
453: 15+1+9=25 =\= 30
454: 15+1+11=27 =\= 30
455: 15+1+13=29 =\= 30
456: 15+1+15=31 =\= 30
457: 15+3+1=19 =\= 30
458: 15+3+3=21 =\= 30
459: 15+3+5=23 =\= 30
460: 15+3+7=25 =\= 30
461: 15+3+9=27 =\= 30
462: 15+3+11=29 =\= 30
463: 15+3+13=31 =\= 30
464: 15+3+15=33 =\= 30
465: 15+5+1=21 =\= 30
466: 15+5+3=23 =\= 30
467: 15+5+5=25 =\= 30
468: 15+5+7=27 =\= 30
469: 15+5+9=29 =\= 30
470: 15+5+11=31 =\= 30
471: 15+5+13=33 =\= 30
472: 15+5+15=35 =\= 30
473: 15+7+1=23 =\= 30
474: 15+7+3=25 =\= 30
475: 15+7+5=27 =\= 30
476: 15+7+7=29 =\= 30
477: 15+7+9=31 =\= 30
478: 15+7+11=33 =\= 30
479: 15+7+13=35 =\= 30
480: 15+7+15=37 =\= 30
481: 15+9+1=25 =\= 30
482: 15+9+3=27 =\= 30
483: 15+9+5=29 =\= 30
484: 15+9+7=31 =\= 30
485: 15+9+9=33 =\= 30
486: 15+9+11=35 =\= 30
487: 15+9+13=37 =\= 30
488: 15+9+15=39 =\= 30
489: 15+11+1=27 =\= 30
490: 15+11+3=29 =\= 30
491: 15+11+5=31 =\= 30
492: 15+11+7=33 =\= 30
493: 15+11+9=35 =\= 30
494: 15+11+11=37 =\= 30
495: 15+11+13=39 =\= 30
496: 15+11+15=41 =\= 30
497: 15+13+1=29 =\= 30
498: 15+13+3=31 =\= 30
499: 15+13+5=33 =\= 30
500: 15+13+7=35 =\= 30
501: 15+13+9=37 =\= 30
502: 15+13+11=39 =\= 30
503: 15+13+13=41 =\= 30
504: 15+13+15=43 =\= 30
505: 15+15+1=31 =\= 30
506: 15+15+3=33 =\= 30
507: 15+15+5=35 =\= 30
508: 15+15+7=37 =\= 30
509: 15+15+9=39 =\= 30
510: 15+15+11=41 =\= 30
511: 15+15+13=43 =\= 30
512: 15+15+15=45 =\= 30

此题无解！
好吧，我承认这是骗人的！
千万别再分享出去害人了！

Answer 2

这个题的原版我看过，还附加了一个条件就是数字可以重复使用。该题原本不难，但是很多人的思路局限于三个数字，却没有想到只要等于30就是答案。那么怎样才能等于30？很显然利用奇数之和是不可能得到一个偶数的。现在的问题是要转化成偶数？请问这三个空里面有没有规定加减乘除?很显然没有，人家只是让你填空，至于里面是什么，是没有任何关系的。我们只要明白这个思路。。。就有很多答案，比如：（15）+（7）+（9-1）=30.（11）+（9）+（11-1）=30。还可以在不同的进制之下做
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