爱吱声

标题: 几个小题目 [打印本页]
作者: 喜欢    时间: 2015-3-23 21:17
标题: 几个小题目
本帖最后由 喜欢 于 2015-3-23 08:18 编辑

（第一次用“板”通过微信在爱坛发帖，要贴图，不知能否成功。）

昨天花了十来分钟，做了三个小题目。别人贴的，没贴答案。但我自信是答对了。
有兴趣的同学可以试试做，然后我们对答案。

作者: 喜欢    时间: 2015-3-23 21:28
现在是要扫描二维码才能发言。那我若没有电脑，直接用板上爱坛，怎么通过微信上爱坛呢？
从前的 小爱 我也没找到……
作者: 常挨揍    时间: 2015-3-23 21:32
喜欢 发表于 2015-3-23 21:28
现在是要扫描二维码才能发言。那我若没有电脑，直接用板上爱坛，怎么通过微信上爱坛呢？
从前的 小爱 我也 ...

微信收藏里面有
作者: 黑洞的颜色    时间: 2015-3-23 22:21
Q5:
3 balls
作者: 黑洞的颜色    时间: 2015-3-23 22:22
Q6:
1
                  
作者: 黑洞的颜色    时间: 2015-3-23 22:27
36+204+1758

1758 is the largest

Took a break from a boring meeting, this is good ...
作者: njyd    时间: 2015-3-23 23:27
俺只会第二题，这个简单：
最下一排是4个圆，要变成1个至少要移3个圆。
实际也移3个京够了，把三个尖上的圆移到对角线位置。
作者: 仁    时间: 2015-3-23 23:57
njyd 发表于 2015-3-23 23:27
俺只会第二题，这个简单：
最下一排是4个圆，要变成1个至少要移3个圆。
实际也移3个京够了，把三个尖上的圆 ...

能不能把纸转动一下？
作者: njyd    时间: 2015-3-24 00:02
仁 发表于 2015-3-23 23:57
能不能把纸转动一下？

转纸只剩一个圆不动了。
作者: 仁    时间: 2015-3-24 00:14
njyd 发表于 2015-3-24 00:02
转纸只剩一个圆不动了。

回答的高明！那人移动一下行吗？
作者: 玩牌也    时间: 2015-3-24 00:28
仁 发表于 2015-3-24 00:14
回答的高明！那人移动一下行吗？

這個答案不錯。用三維空間來解決二維空間的題目。
作者: 七月群山    时间: 2015-3-24 03:22
喜欢 发表于 2015-3-23 21:28
现在是要扫描二维码才能发言。那我若没有电脑，直接用板上爱坛，怎么通过微信上爱坛呢？
从前的 小爱 我也 ...

把二维码截图，微信扫码到相册里选，这样行不行呢
作者: 喜欢    时间: 2015-3-24 03:25
常挨揍 发表于 2015-3-23 08:32
微信收藏里面有

谢谢～我从微信收藏里面看见了这个链接。

但是没法看内容，让我升级版本，升级了，重启了，仍然说“您的版本不支持此功能，请升级”。我已经升无可升了。我用的是iPad Mini。

没别人遇到这问题？
作者: 喜欢    时间: 2015-3-24 03:27
黑洞的颜色 发表于 2015-3-23 09:27
36+204+1758

1758 is the largest

我还有另一个答案——其四位数比1758小——我先找到那个，后找到你说的这个。
作者: 喜欢    时间: 2015-3-24 03:34
本帖最后由 喜欢 于 2015-3-23 15:28 编辑
七月群山 发表于 2015-3-23 14:22
把二维码截图，微信扫码到相册里选，这样行不行呢


好像得实际用手机/平板电脑的摄像头去扫描二维码才行吧？所以我得在电脑前面用平板上爱坛，真是那啥啥费一道手续。 （此帖一为测试此法，二因照片在平板上，只好用此法。）

正想问你呢：你是单单用手机就能通过微信上爱坛并回复吗？怎么实现呢？

我通常得用手机/平板的浏览器上爱坛，跟去其它网址一样，跟用电脑上相仿。
作者: 七月群山    时间: 2015-3-24 04:59
喜欢 发表于 2015-3-24 03:34
好像得实际用手机/平板电脑的摄像头去扫描二维码才行吧？所以我得在电脑前面用平板上爱坛，真是那啥啥费 ...

通过微信上爱坛，不知道啊，头回听说
作者: 喜欢    时间: 2015-3-24 05:20
本帖最后由 喜欢 于 2015-3-23 16:22 编辑
七月群山 发表于 2015-3-23 15:59
通过微信上爱坛，不知道啊，头回听说


那你在《温柔乡》的 沙发 里说：“原来扫一扫是这么用的”——在说什么呢？
作者: 七月群山    时间: 2015-3-24 05:38
只能回复吧，而且只能回复主帖。好处是可、以手写输入
作者: 喜欢    时间: 2015-3-24 07:40
七月群山 发表于 2015-3-23 16:38
只能回复吧，而且只能回复主帖。好处是可、以手写输入

你这回复用到扫一扫功能了吗？
作者: xlan1976    时间: 2015-3-24 08:03
第一个没想；
第二个是挪动3个吧；
第三个应该是9，首先-25的次方尾数肯定是5，6的次方尾数肯定是6。正数和负数相加有一个谁减谁的问题，举个例子16+（-15）尾数是1，16+（-25）尾数就变9了。-25的2015次方肯定比6的2014次方绝对值大，所以尾数应该是9。
作者: 黑洞的颜色    时间: 2015-3-24 22:29
xlan1976 发表于 2015-3-24 08:03
第一个没想；
第二个是挪动3个吧；
第三个应该是9，首先-25的次方尾数肯定是5，6的次方尾数肯定是6。正数和 ...

这个说的对。我疏忽了。
作者: 黑洞的颜色    时间: 2015-3-24 22:30
黑洞的颜色 发表于 2015-3-23 22:22
Q6:
1

喜欢说的对，我疏忽了。
作者: Highway    时间: 2015-3-24 23:55
本帖最后由 Highway 于 2015-3-25 00:03 编辑

第四题：
最小四位数：1204
最大四位数：1758
全部可能的四位数组合：128
[1204, 1206, 1208, 1234, 1235, 1236, 1238, 1239, 1240, 1243, 1245, 1247, 1248, 1253, 1254, 1256, 1257, 1258, 1270, 1273, 1274, 1275, 1279, 1280, 1283, 1284, 1285, 1289, 1293, 1297, 1298, 1324, 1326, 1328, 1340, 1342, 1346, 1347, 1349, 1362, 1367, 1369, 1370, 1372, 1374, 1376, 1378, 1380, 1382, 1386, 1387, 1389, 1394, 1396, 1398, 1403, 1407, 1408, 1423, 1427, 1428, 1463, 1467, 1468, 1503, 1507, 1508, 1523, 1524, 1526, 1527, 1528, 1540, 1542, 1546, 1547, 1549, 1562, 1563, 1567, 1568, 1569, 1570, 1572, 1574, 1576, 1578, 1580, 1582, 1586, 1587, 1589, 1594, 1596, 1598, 1634, 1635, 1639, 1640, 1643, 1645, 1647, 1648, 1653, 1657, 1658, 1670, 1673, 1674, 1675, 1679, 1680, 1683, 1684, 1685, 1689, 1693, 1697, 1698, 1704, 1706, 1708, 1734, 1736, 1738, 1754, 1756, 1758]

如果愿意动脑筋的话，可以把1998改成2015，那么答案会是什么样呢？
作者: 喜欢    时间: 2015-3-25 02:22
Highway 发表于 2015-3-24 10:55
第四题：
最小四位数：1204
最大四位数：1758

嗯？你这128个可能性都是符合题意的答案吗？
比如，1204要加那些数得到1998呢？
如果不是，你这128个可能性有什么特征呢？
作者: 喜欢    时间: 2015-3-25 02:24
黑洞的颜色 发表于 2015-3-24 09:30
喜欢说的对，我疏忽了。

我也疏忽了，掉陷阱里了，还是个好陷阱。 汗～
作者: Highway    时间: 2015-3-25 08:41
喜欢 发表于 2015-3-25 02:22
嗯？你这128个可能性都是符合题意的答案吗？
比如，1204要加那些数得到1998呢？
如果不是，你这128个可能 ...

当然了，我还能蒙人吗。

不信你一个个试，假一罚十！
作者: 喜欢    时间: 2015-3-25 09:03
Highway 发表于 2015-3-24 19:41
当然了，我还能蒙人吗。

不信你一个个试，假一罚十！

哦，对。至少1204我能算出来了。
那么，你这是用电脑程序穷举出来的吧？
厉害！
作者: Highway    时间: 2015-3-25 10:01
喜欢 发表于 2015-3-25 09:03
哦，对。至少1204我能算出来了。
那么，你这是用电脑程序穷举出来的吧？
厉害！ ...

写了七八行的程序，算是作弊吧。这种事儿自己想个算法出来，具体操作就交给电脑去干吧，它一秒钟能运行好几亿次呢，闲着也是闲着。
作者: 独角兽    时间: 2015-3-25 15:17
喜欢 发表于 2015-3-25 02:22
嗯？你这128个可能性都是符合题意的答案吗？
比如，1204要加那些数得到1998呢？
如果不是，你这128个可能 ...

喜欢gg，咱不用电脑。因为这三个数的个位，十位，百位都可以互换，得出的答案都是满足题目要求的。所以确定个位，十位 （各有三个）和百位的组合，就能得出一共有多少种解了。我做题的纸找不着了，所以现在也不知道是不是有且仅有128组解，但我选择相信轧叔的电脑了。
作者: Highway    时间: 2015-3-26 05:05
独角兽 发表于 2015-3-25 15:17
喜欢gg，咱不用电脑。因为这三个数的个位，十位，百位都可以互换，得出的答案都是满足题目要求的。所以确 ...

  1 ==>  36 + 758 + 1204 = 1998
  2 ==>  38 + 756 + 1204 = 1998
  3 ==>  56 + 738 + 1204 = 1998
  4 ==>  58 + 736 + 1204 = 1998
  5 ==>  34 + 758 + 1206 = 1998
  6 ==>  38 + 754 + 1206 = 1998
  7 ==>  54 + 738 + 1206 = 1998
  8 ==>  58 + 734 + 1206 = 1998
  9 ==>  34 + 756 + 1208 = 1998
10 ==>  36 + 754 + 1208 = 1998
11 ==>  54 + 736 + 1208 = 1998
12 ==>  56 + 734 + 1208 = 1998
13 ==>  06 + 758 + 1234 = 1998
14 ==>  08 + 756 + 1234 = 1998
15 ==>  56 + 708 + 1234 = 1998
16 ==>  58 + 706 + 1234 = 1998
17 ==>  75 + 689 + 1234 = 1998
18 ==>  79 + 685 + 1234 = 1998
19 ==>  85 + 679 + 1234 = 1998
20 ==>  89 + 675 + 1234 = 1998
21 ==>  74 + 689 + 1235 = 1998
22 ==>  79 + 684 + 1235 = 1998
23 ==>  84 + 679 + 1235 = 1998
24 ==>  89 + 674 + 1235 = 1998
25 ==>  04 + 758 + 1236 = 1998
26 ==>  08 + 754 + 1236 = 1998
27 ==>  54 + 708 + 1236 = 1998
28 ==>  58 + 704 + 1236 = 1998
29 ==>  04 + 756 + 1238 = 1998
30 ==>  06 + 754 + 1238 = 1998
31 ==>  54 + 706 + 1238 = 1998
32 ==>  56 + 704 + 1238 = 1998
33 ==>  74 + 685 + 1239 = 1998
34 ==>  75 + 684 + 1239 = 1998
35 ==>  84 + 675 + 1239 = 1998
36 ==>  85 + 674 + 1239 = 1998
37 ==>  73 + 685 + 1240 = 1998
38 ==>  75 + 683 + 1240 = 1998
39 ==>  83 + 675 + 1240 = 1998
40 ==>  85 + 673 + 1240 = 1998
41 ==>  57 + 698 + 1243 = 1998
42 ==>  58 + 697 + 1243 = 1998
43 ==>  70 + 685 + 1243 = 1998
44 ==>  75 + 680 + 1243 = 1998
45 ==>  80 + 675 + 1243 = 1998
46 ==>  85 + 670 + 1243 = 1998
47 ==>  97 + 658 + 1243 = 1998
48 ==>  98 + 657 + 1243 = 1998
49 ==>  70 + 683 + 1245 = 1998
50 ==>  73 + 680 + 1245 = 1998
51 ==>  80 + 673 + 1245 = 1998
52 ==>  83 + 670 + 1245 = 1998
53 ==>  53 + 698 + 1247 = 1998
54 ==>  58 + 693 + 1247 = 1998
55 ==>  93 + 658 + 1247 = 1998
56 ==>  98 + 653 + 1247 = 1998
57 ==>  53 + 697 + 1248 = 1998
58 ==>  57 + 693 + 1248 = 1998
59 ==>  93 + 657 + 1248 = 1998
60 ==>  97 + 653 + 1248 = 1998
61 ==>  47 + 698 + 1253 = 1998
62 ==>  48 + 697 + 1253 = 1998
63 ==>  97 + 648 + 1253 = 1998
64 ==>  98 + 647 + 1253 = 1998
65 ==>  06 + 738 + 1254 = 1998
66 ==>  08 + 736 + 1254 = 1998
67 ==>  36 + 708 + 1254 = 1998
68 ==>  38 + 706 + 1254 = 1998
69 ==>  04 + 738 + 1256 = 1998
70 ==>  08 + 734 + 1256 = 1998
71 ==>  34 + 708 + 1256 = 1998
72 ==>  38 + 704 + 1256 = 1998
73 ==>  43 + 698 + 1257 = 1998
74 ==>  48 + 693 + 1257 = 1998
75 ==>  93 + 648 + 1257 = 1998
76 ==>  98 + 643 + 1257 = 1998
77 ==>  04 + 736 + 1258 = 1998
78 ==>  06 + 734 + 1258 = 1998
79 ==>  34 + 706 + 1258 = 1998
80 ==>  36 + 704 + 1258 = 1998
81 ==>  43 + 697 + 1258 = 1998
82 ==>  47 + 693 + 1258 = 1998
83 ==>  93 + 647 + 1258 = 1998
84 ==>  97 + 643 + 1258 = 1998
85 ==>  43 + 685 + 1270 = 1998
86 ==>  45 + 683 + 1270 = 1998
87 ==>  83 + 645 + 1270 = 1998
88 ==>  85 + 643 + 1270 = 1998
89 ==>  40 + 685 + 1273 = 1998
90 ==>  45 + 680 + 1273 = 1998
91 ==>  80 + 645 + 1273 = 1998
92 ==>  85 + 640 + 1273 = 1998
93 ==>  35 + 689 + 1274 = 1998
94 ==>  39 + 685 + 1274 = 1998
95 ==>  85 + 639 + 1274 = 1998
96 ==>  89 + 635 + 1274 = 1998
97 ==>  34 + 689 + 1275 = 1998
98 ==>  39 + 684 + 1275 = 1998
99 ==>  40 + 683 + 1275 = 1998
100 ==>  43 + 680 + 1275 = 1998
101 ==>  80 + 643 + 1275 = 1998
102 ==>  83 + 640 + 1275 = 1998
103 ==>  84 + 639 + 1275 = 1998
104 ==>  89 + 634 + 1275 = 1998
105 ==>  34 + 685 + 1279 = 1998
106 ==>  35 + 684 + 1279 = 1998
107 ==>  84 + 635 + 1279 = 1998
108 ==>  85 + 634 + 1279 = 1998
109 ==>  43 + 675 + 1280 = 1998
110 ==>  45 + 673 + 1280 = 1998
111 ==>  73 + 645 + 1280 = 1998
112 ==>  75 + 643 + 1280 = 1998
113 ==>  40 + 675 + 1283 = 1998
114 ==>  45 + 670 + 1283 = 1998
115 ==>  70 + 645 + 1283 = 1998
116 ==>  75 + 640 + 1283 = 1998
117 ==>  35 + 679 + 1284 = 1998
118 ==>  39 + 675 + 1284 = 1998
119 ==>  75 + 639 + 1284 = 1998
120 ==>  79 + 635 + 1284 = 1998
121 ==>  34 + 679 + 1285 = 1998
122 ==>  39 + 674 + 1285 = 1998
123 ==>  40 + 673 + 1285 = 1998
124 ==>  43 + 670 + 1285 = 1998
125 ==>  70 + 643 + 1285 = 1998
126 ==>  73 + 640 + 1285 = 1998
127 ==>  74 + 639 + 1285 = 1998
128 ==>  79 + 634 + 1285 = 1998
129 ==>  34 + 675 + 1289 = 1998
130 ==>  35 + 674 + 1289 = 1998
131 ==>  74 + 635 + 1289 = 1998
132 ==>  75 + 634 + 1289 = 1998
133 ==>  47 + 658 + 1293 = 1998
134 ==>  48 + 657 + 1293 = 1998
135 ==>  57 + 648 + 1293 = 1998
136 ==>  58 + 647 + 1293 = 1998
137 ==>  43 + 658 + 1297 = 1998
138 ==>  48 + 653 + 1297 = 1998
139 ==>  53 + 648 + 1297 = 1998
140 ==>  58 + 643 + 1297 = 1998
141 ==>  43 + 657 + 1298 = 1998
142 ==>  47 + 653 + 1298 = 1998
143 ==>  53 + 647 + 1298 = 1998
144 ==>  57 + 643 + 1298 = 1998
145 ==>  76 + 598 + 1324 = 1998
146 ==>  78 + 596 + 1324 = 1998
147 ==>  96 + 578 + 1324 = 1998
148 ==>  98 + 576 + 1324 = 1998
149 ==>  74 + 598 + 1326 = 1998
150 ==>  78 + 594 + 1326 = 1998
151 ==>  94 + 578 + 1326 = 1998
152 ==>  98 + 574 + 1326 = 1998
153 ==>  74 + 596 + 1328 = 1998
154 ==>  76 + 594 + 1328 = 1998
155 ==>  94 + 576 + 1328 = 1998
156 ==>  96 + 574 + 1328 = 1998
157 ==>  72 + 586 + 1340 = 1998
158 ==>  76 + 582 + 1340 = 1998
159 ==>  82 + 576 + 1340 = 1998
160 ==>  86 + 572 + 1340 = 1998
161 ==>  67 + 589 + 1342 = 1998
162 ==>  69 + 587 + 1342 = 1998
163 ==>  70 + 586 + 1342 = 1998
164 ==>  76 + 580 + 1342 = 1998
165 ==>  80 + 576 + 1342 = 1998
166 ==>  86 + 570 + 1342 = 1998
167 ==>  87 + 569 + 1342 = 1998
168 ==>  89 + 567 + 1342 = 1998
169 ==>  70 + 582 + 1346 = 1998
170 ==>  72 + 580 + 1346 = 1998
171 ==>  80 + 572 + 1346 = 1998
172 ==>  82 + 570 + 1346 = 1998
173 ==>  62 + 589 + 1347 = 1998
174 ==>  69 + 582 + 1347 = 1998
175 ==>  82 + 569 + 1347 = 1998
176 ==>  89 + 562 + 1347 = 1998
177 ==>  62 + 587 + 1349 = 1998
178 ==>  67 + 582 + 1349 = 1998
179 ==>  82 + 567 + 1349 = 1998
180 ==>  87 + 562 + 1349 = 1998
181 ==>  47 + 589 + 1362 = 1998
182 ==>  49 + 587 + 1362 = 1998
183 ==>  87 + 549 + 1362 = 1998
184 ==>  89 + 547 + 1362 = 1998
185 ==>  42 + 589 + 1367 = 1998
186 ==>  49 + 582 + 1367 = 1998
187 ==>  82 + 549 + 1367 = 1998
188 ==>  89 + 542 + 1367 = 1998
189 ==>  42 + 587 + 1369 = 1998
190 ==>  47 + 582 + 1369 = 1998
191 ==>  82 + 547 + 1369 = 1998
192 ==>  87 + 542 + 1369 = 1998
193 ==>  42 + 586 + 1370 = 1998
194 ==>  46 + 582 + 1370 = 1998
195 ==>  82 + 546 + 1370 = 1998
196 ==>  86 + 542 + 1370 = 1998
197 ==>  40 + 586 + 1372 = 1998
198 ==>  46 + 580 + 1372 = 1998
199 ==>  80 + 546 + 1372 = 1998
200 ==>  86 + 540 + 1372 = 1998
201 ==>  26 + 598 + 1374 = 1998
202 ==>  28 + 596 + 1374 = 1998
203 ==>  96 + 528 + 1374 = 1998
204 ==>  98 + 526 + 1374 = 1998
205 ==>  24 + 598 + 1376 = 1998
206 ==>  28 + 594 + 1376 = 1998
207 ==>  40 + 582 + 1376 = 1998
208 ==>  42 + 580 + 1376 = 1998
209 ==>  80 + 542 + 1376 = 1998
210 ==>  82 + 540 + 1376 = 1998
211 ==>  94 + 528 + 1376 = 1998
212 ==>  98 + 524 + 1376 = 1998
213 ==>  24 + 596 + 1378 = 1998
214 ==>  26 + 594 + 1378 = 1998
215 ==>  94 + 526 + 1378 = 1998
216 ==>  96 + 524 + 1378 = 1998
217 ==>  42 + 576 + 1380 = 1998
218 ==>  46 + 572 + 1380 = 1998
219 ==>  72 + 546 + 1380 = 1998
220 ==>  76 + 542 + 1380 = 1998
221 ==>  40 + 576 + 1382 = 1998
222 ==>  46 + 570 + 1382 = 1998
223 ==>  47 + 569 + 1382 = 1998
224 ==>  49 + 567 + 1382 = 1998
225 ==>  67 + 549 + 1382 = 1998
226 ==>  69 + 547 + 1382 = 1998
227 ==>  70 + 546 + 1382 = 1998
228 ==>  76 + 540 + 1382 = 1998
229 ==>  40 + 572 + 1386 = 1998
230 ==>  42 + 570 + 1386 = 1998
231 ==>  70 + 542 + 1386 = 1998
232 ==>  72 + 540 + 1386 = 1998
233 ==>  42 + 569 + 1387 = 1998
234 ==>  49 + 562 + 1387 = 1998
235 ==>  62 + 549 + 1387 = 1998
236 ==>  69 + 542 + 1387 = 1998
237 ==>  42 + 567 + 1389 = 1998
238 ==>  47 + 562 + 1389 = 1998
239 ==>  62 + 547 + 1389 = 1998
240 ==>  67 + 542 + 1389 = 1998
241 ==>  26 + 578 + 1394 = 1998
242 ==>  28 + 576 + 1394 = 1998
243 ==>  76 + 528 + 1394 = 1998
244 ==>  78 + 526 + 1394 = 1998
245 ==>  24 + 578 + 1396 = 1998
246 ==>  28 + 574 + 1396 = 1998
247 ==>  74 + 528 + 1396 = 1998
248 ==>  78 + 524 + 1396 = 1998
249 ==>  24 + 576 + 1398 = 1998
250 ==>  26 + 574 + 1398 = 1998
251 ==>  74 + 526 + 1398 = 1998
252 ==>  76 + 524 + 1398 = 1998
253 ==>  27 + 568 + 1403 = 1998
254 ==>  28 + 567 + 1403 = 1998
255 ==>  67 + 528 + 1403 = 1998
256 ==>  68 + 527 + 1403 = 1998
257 ==>  23 + 568 + 1407 = 1998
258 ==>  28 + 563 + 1407 = 1998
259 ==>  63 + 528 + 1407 = 1998
260 ==>  68 + 523 + 1407 = 1998
261 ==>  23 + 567 + 1408 = 1998
262 ==>  27 + 563 + 1408 = 1998
263 ==>  63 + 527 + 1408 = 1998
264 ==>  67 + 523 + 1408 = 1998
265 ==>  07 + 568 + 1423 = 1998
266 ==>  08 + 567 + 1423 = 1998
267 ==>  67 + 508 + 1423 = 1998
268 ==>  68 + 507 + 1423 = 1998
269 ==>  03 + 568 + 1427 = 1998
270 ==>  08 + 563 + 1427 = 1998
271 ==>  63 + 508 + 1427 = 1998
272 ==>  68 + 503 + 1427 = 1998
273 ==>  03 + 567 + 1428 = 1998
274 ==>  07 + 563 + 1428 = 1998
275 ==>  63 + 507 + 1428 = 1998
276 ==>  67 + 503 + 1428 = 1998
277 ==>  07 + 528 + 1463 = 1998
278 ==>  08 + 527 + 1463 = 1998
279 ==>  27 + 508 + 1463 = 1998
280 ==>  28 + 507 + 1463 = 1998
281 ==>  03 + 528 + 1467 = 1998
282 ==>  08 + 523 + 1467 = 1998
283 ==>  23 + 508 + 1467 = 1998
284 ==>  28 + 503 + 1467 = 1998
285 ==>  03 + 527 + 1468 = 1998
286 ==>  07 + 523 + 1468 = 1998
287 ==>  23 + 507 + 1468 = 1998
288 ==>  27 + 503 + 1468 = 1998
289 ==>  27 + 468 + 1503 = 1998
290 ==>  28 + 467 + 1503 = 1998
291 ==>  67 + 428 + 1503 = 1998
292 ==>  68 + 427 + 1503 = 1998
293 ==>  23 + 468 + 1507 = 1998
294 ==>  28 + 463 + 1507 = 1998
295 ==>  63 + 428 + 1507 = 1998
296 ==>  68 + 423 + 1507 = 1998
297 ==>  23 + 467 + 1508 = 1998
298 ==>  27 + 463 + 1508 = 1998
299 ==>  63 + 427 + 1508 = 1998
300 ==>  67 + 423 + 1508 = 1998
301 ==>  07 + 468 + 1523 = 1998
302 ==>  08 + 467 + 1523 = 1998
303 ==>  67 + 408 + 1523 = 1998
304 ==>  68 + 407 + 1523 = 1998
305 ==>  76 + 398 + 1524 = 1998
306 ==>  78 + 396 + 1524 = 1998
307 ==>  96 + 378 + 1524 = 1998
308 ==>  98 + 376 + 1524 = 1998
309 ==>  74 + 398 + 1526 = 1998
310 ==>  78 + 394 + 1526 = 1998
311 ==>  94 + 378 + 1526 = 1998
312 ==>  98 + 374 + 1526 = 1998
313 ==>  03 + 468 + 1527 = 1998
314 ==>  08 + 463 + 1527 = 1998
315 ==>  63 + 408 + 1527 = 1998
316 ==>  68 + 403 + 1527 = 1998
317 ==>  03 + 467 + 1528 = 1998
318 ==>  07 + 463 + 1528 = 1998
319 ==>  63 + 407 + 1528 = 1998
320 ==>  67 + 403 + 1528 = 1998
321 ==>  74 + 396 + 1528 = 1998
322 ==>  76 + 394 + 1528 = 1998
323 ==>  94 + 376 + 1528 = 1998
324 ==>  96 + 374 + 1528 = 1998
325 ==>  72 + 386 + 1540 = 1998
326 ==>  76 + 382 + 1540 = 1998
327 ==>  82 + 376 + 1540 = 1998
328 ==>  86 + 372 + 1540 = 1998
329 ==>  67 + 389 + 1542 = 1998
330 ==>  69 + 387 + 1542 = 1998
331 ==>  70 + 386 + 1542 = 1998
332 ==>  76 + 380 + 1542 = 1998
333 ==>  80 + 376 + 1542 = 1998
334 ==>  86 + 370 + 1542 = 1998
335 ==>  87 + 369 + 1542 = 1998
336 ==>  89 + 367 + 1542 = 1998
337 ==>  70 + 382 + 1546 = 1998
338 ==>  72 + 380 + 1546 = 1998
339 ==>  80 + 372 + 1546 = 1998
340 ==>  82 + 370 + 1546 = 1998
341 ==>  62 + 389 + 1547 = 1998
342 ==>  69 + 382 + 1547 = 1998
343 ==>  82 + 369 + 1547 = 1998
344 ==>  89 + 362 + 1547 = 1998
345 ==>  62 + 387 + 1549 = 1998
346 ==>  67 + 382 + 1549 = 1998
347 ==>  82 + 367 + 1549 = 1998
348 ==>  87 + 362 + 1549 = 1998
349 ==>  47 + 389 + 1562 = 1998
350 ==>  49 + 387 + 1562 = 1998
351 ==>  87 + 349 + 1562 = 1998
352 ==>  89 + 347 + 1562 = 1998
353 ==>  07 + 428 + 1563 = 1998
354 ==>  08 + 427 + 1563 = 1998
355 ==>  27 + 408 + 1563 = 1998
356 ==>  28 + 407 + 1563 = 1998
357 ==>  03 + 428 + 1567 = 1998
358 ==>  08 + 423 + 1567 = 1998
359 ==>  23 + 408 + 1567 = 1998
360 ==>  28 + 403 + 1567 = 1998
361 ==>  42 + 389 + 1567 = 1998
362 ==>  49 + 382 + 1567 = 1998
363 ==>  82 + 349 + 1567 = 1998
364 ==>  89 + 342 + 1567 = 1998
365 ==>  03 + 427 + 1568 = 1998
366 ==>  07 + 423 + 1568 = 1998
367 ==>  23 + 407 + 1568 = 1998
368 ==>  27 + 403 + 1568 = 1998
369 ==>  42 + 387 + 1569 = 1998
370 ==>  47 + 382 + 1569 = 1998
371 ==>  82 + 347 + 1569 = 1998
372 ==>  87 + 342 + 1569 = 1998
373 ==>  42 + 386 + 1570 = 1998
374 ==>  46 + 382 + 1570 = 1998
375 ==>  82 + 346 + 1570 = 1998
376 ==>  86 + 342 + 1570 = 1998
377 ==>  40 + 386 + 1572 = 1998
378 ==>  46 + 380 + 1572 = 1998
379 ==>  80 + 346 + 1572 = 1998
380 ==>  86 + 340 + 1572 = 1998
381 ==>  26 + 398 + 1574 = 1998
382 ==>  28 + 396 + 1574 = 1998
383 ==>  96 + 328 + 1574 = 1998
384 ==>  98 + 326 + 1574 = 1998
385 ==>  24 + 398 + 1576 = 1998
386 ==>  28 + 394 + 1576 = 1998
387 ==>  40 + 382 + 1576 = 1998
388 ==>  42 + 380 + 1576 = 1998
389 ==>  80 + 342 + 1576 = 1998
390 ==>  82 + 340 + 1576 = 1998
391 ==>  94 + 328 + 1576 = 1998
392 ==>  98 + 324 + 1576 = 1998
393 ==>  24 + 396 + 1578 = 1998
394 ==>  26 + 394 + 1578 = 1998
395 ==>  94 + 326 + 1578 = 1998
396 ==>  96 + 324 + 1578 = 1998
397 ==>  42 + 376 + 1580 = 1998
398 ==>  46 + 372 + 1580 = 1998
399 ==>  72 + 346 + 1580 = 1998
400 ==>  76 + 342 + 1580 = 1998
401 ==>  40 + 376 + 1582 = 1998
402 ==>  46 + 370 + 1582 = 1998
403 ==>  47 + 369 + 1582 = 1998
404 ==>  49 + 367 + 1582 = 1998
405 ==>  67 + 349 + 1582 = 1998
406 ==>  69 + 347 + 1582 = 1998
407 ==>  70 + 346 + 1582 = 1998
408 ==>  76 + 340 + 1582 = 1998
409 ==>  40 + 372 + 1586 = 1998
410 ==>  42 + 370 + 1586 = 1998
411 ==>  70 + 342 + 1586 = 1998
412 ==>  72 + 340 + 1586 = 1998
413 ==>  42 + 369 + 1587 = 1998
414 ==>  49 + 362 + 1587 = 1998
415 ==>  62 + 349 + 1587 = 1998
416 ==>  69 + 342 + 1587 = 1998
417 ==>  42 + 367 + 1589 = 1998
418 ==>  47 + 362 + 1589 = 1998
419 ==>  62 + 347 + 1589 = 1998
420 ==>  67 + 342 + 1589 = 1998
421 ==>  26 + 378 + 1594 = 1998
422 ==>  28 + 376 + 1594 = 1998
423 ==>  76 + 328 + 1594 = 1998
424 ==>  78 + 326 + 1594 = 1998
425 ==>  24 + 378 + 1596 = 1998
426 ==>  28 + 374 + 1596 = 1998
427 ==>  74 + 328 + 1596 = 1998
428 ==>  78 + 324 + 1596 = 1998
429 ==>  24 + 376 + 1598 = 1998
430 ==>  26 + 374 + 1598 = 1998
431 ==>  74 + 326 + 1598 = 1998
432 ==>  76 + 324 + 1598 = 1998
433 ==>  75 + 289 + 1634 = 1998
434 ==>  79 + 285 + 1634 = 1998
435 ==>  85 + 279 + 1634 = 1998
436 ==>  89 + 275 + 1634 = 1998
437 ==>  74 + 289 + 1635 = 1998
438 ==>  79 + 284 + 1635 = 1998
439 ==>  84 + 279 + 1635 = 1998
440 ==>  89 + 274 + 1635 = 1998
441 ==>  74 + 285 + 1639 = 1998
442 ==>  75 + 284 + 1639 = 1998
443 ==>  84 + 275 + 1639 = 1998
444 ==>  85 + 274 + 1639 = 1998
445 ==>  73 + 285 + 1640 = 1998
446 ==>  75 + 283 + 1640 = 1998
447 ==>  83 + 275 + 1640 = 1998
448 ==>  85 + 273 + 1640 = 1998
449 ==>  57 + 298 + 1643 = 1998
450 ==>  58 + 297 + 1643 = 1998
451 ==>  70 + 285 + 1643 = 1998
452 ==>  75 + 280 + 1643 = 1998
453 ==>  80 + 275 + 1643 = 1998
454 ==>  85 + 270 + 1643 = 1998
455 ==>  97 + 258 + 1643 = 1998
456 ==>  98 + 257 + 1643 = 1998
457 ==>  70 + 283 + 1645 = 1998
458 ==>  73 + 280 + 1645 = 1998
459 ==>  80 + 273 + 1645 = 1998
460 ==>  83 + 270 + 1645 = 1998
461 ==>  53 + 298 + 1647 = 1998
462 ==>  58 + 293 + 1647 = 1998
463 ==>  93 + 258 + 1647 = 1998
464 ==>  98 + 253 + 1647 = 1998
465 ==>  53 + 297 + 1648 = 1998
466 ==>  57 + 293 + 1648 = 1998
467 ==>  93 + 257 + 1648 = 1998
468 ==>  97 + 253 + 1648 = 1998
469 ==>  47 + 298 + 1653 = 1998
470 ==>  48 + 297 + 1653 = 1998
471 ==>  97 + 248 + 1653 = 1998
472 ==>  98 + 247 + 1653 = 1998
473 ==>  43 + 298 + 1657 = 1998
474 ==>  48 + 293 + 1657 = 1998
475 ==>  93 + 248 + 1657 = 1998
476 ==>  98 + 243 + 1657 = 1998
477 ==>  43 + 297 + 1658 = 1998
478 ==>  47 + 293 + 1658 = 1998
479 ==>  93 + 247 + 1658 = 1998
480 ==>  97 + 243 + 1658 = 1998
481 ==>  43 + 285 + 1670 = 1998
482 ==>  45 + 283 + 1670 = 1998
483 ==>  83 + 245 + 1670 = 1998
484 ==>  85 + 243 + 1670 = 1998
485 ==>  40 + 285 + 1673 = 1998
486 ==>  45 + 280 + 1673 = 1998
487 ==>  80 + 245 + 1673 = 1998
488 ==>  85 + 240 + 1673 = 1998
489 ==>  35 + 289 + 1674 = 1998
490 ==>  39 + 285 + 1674 = 1998
491 ==>  85 + 239 + 1674 = 1998
492 ==>  89 + 235 + 1674 = 1998
493 ==>  34 + 289 + 1675 = 1998
494 ==>  39 + 284 + 1675 = 1998
495 ==>  40 + 283 + 1675 = 1998
496 ==>  43 + 280 + 1675 = 1998
497 ==>  80 + 243 + 1675 = 1998
498 ==>  83 + 240 + 1675 = 1998
499 ==>  84 + 239 + 1675 = 1998
500 ==>  89 + 234 + 1675 = 1998
501 ==>  34 + 285 + 1679 = 1998
502 ==>  35 + 284 + 1679 = 1998
503 ==>  84 + 235 + 1679 = 1998
504 ==>  85 + 234 + 1679 = 1998
505 ==>  43 + 275 + 1680 = 1998
506 ==>  45 + 273 + 1680 = 1998
507 ==>  73 + 245 + 1680 = 1998
508 ==>  75 + 243 + 1680 = 1998
509 ==>  40 + 275 + 1683 = 1998
510 ==>  45 + 270 + 1683 = 1998
511 ==>  70 + 245 + 1683 = 1998
512 ==>  75 + 240 + 1683 = 1998
513 ==>  35 + 279 + 1684 = 1998
514 ==>  39 + 275 + 1684 = 1998
515 ==>  75 + 239 + 1684 = 1998
516 ==>  79 + 235 + 1684 = 1998
517 ==>  34 + 279 + 1685 = 1998
518 ==>  39 + 274 + 1685 = 1998
519 ==>  40 + 273 + 1685 = 1998
520 ==>  43 + 270 + 1685 = 1998
521 ==>  70 + 243 + 1685 = 1998
522 ==>  73 + 240 + 1685 = 1998
523 ==>  74 + 239 + 1685 = 1998
524 ==>  79 + 234 + 1685 = 1998
525 ==>  34 + 275 + 1689 = 1998
526 ==>  35 + 274 + 1689 = 1998
527 ==>  74 + 235 + 1689 = 1998
528 ==>  75 + 234 + 1689 = 1998
529 ==>  47 + 258 + 1693 = 1998
530 ==>  48 + 257 + 1693 = 1998
531 ==>  57 + 248 + 1693 = 1998
532 ==>  58 + 247 + 1693 = 1998
533 ==>  43 + 258 + 1697 = 1998
534 ==>  48 + 253 + 1697 = 1998
535 ==>  53 + 248 + 1697 = 1998
536 ==>  58 + 243 + 1697 = 1998
537 ==>  43 + 257 + 1698 = 1998
538 ==>  47 + 253 + 1698 = 1998
539 ==>  53 + 247 + 1698 = 1998
540 ==>  57 + 243 + 1698 = 1998
541 ==>  36 + 258 + 1704 = 1998
542 ==>  38 + 256 + 1704 = 1998
543 ==>  56 + 238 + 1704 = 1998
544 ==>  58 + 236 + 1704 = 1998
545 ==>  34 + 258 + 1706 = 1998
546 ==>  38 + 254 + 1706 = 1998
547 ==>  54 + 238 + 1706 = 1998
548 ==>  58 + 234 + 1706 = 1998
549 ==>  34 + 256 + 1708 = 1998
550 ==>  36 + 254 + 1708 = 1998
551 ==>  54 + 236 + 1708 = 1998
552 ==>  56 + 234 + 1708 = 1998
553 ==>  06 + 258 + 1734 = 1998
554 ==>  08 + 256 + 1734 = 1998
555 ==>  56 + 208 + 1734 = 1998
556 ==>  58 + 206 + 1734 = 1998
557 ==>  04 + 258 + 1736 = 1998
558 ==>  08 + 254 + 1736 = 1998
559 ==>  54 + 208 + 1736 = 1998
560 ==>  58 + 204 + 1736 = 1998
561 ==>  04 + 256 + 1738 = 1998
562 ==>  06 + 254 + 1738 = 1998
563 ==>  54 + 206 + 1738 = 1998
564 ==>  56 + 204 + 1738 = 1998
565 ==>  06 + 238 + 1754 = 1998
566 ==>  08 + 236 + 1754 = 1998
567 ==>  36 + 208 + 1754 = 1998
568 ==>  38 + 206 + 1754 = 1998
569 ==>  04 + 238 + 1756 = 1998
570 ==>  08 + 234 + 1756 = 1998
571 ==>  34 + 208 + 1756 = 1998
572 ==>  38 + 204 + 1756 = 1998
573 ==>  04 + 236 + 1758 = 1998
574 ==>  06 + 234 + 1758 = 1998
575 ==>  34 + 206 + 1758 = 1998
576 ==>  36 + 204 + 1758 = 1998

总共是576个答案，但是最后一个四位数字只有128种。
作者: 独角兽    时间: 2015-3-26 05:57
Highway 发表于 2015-3-26 05:05
1 ==>  36 + 758 + 1204 = 1998
  2 ==>  38 + 756 + 1204 = 1998
  3 ==>  56 + 738 + 1204 = 1998

怎么这么多？实际上我昨天晚上回完贴后精神来了。自己又搞了一遍。结果算得144组解，其中四位数128种跟轧叔是一样的。可是144和576也差太多了。。。。
就算04这种不算，也还是对不上呀，不开心。。。



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