for2)You are very far from understanding the problem.

Only permutation, there is a byjection.

for 1) I thnk I am right,first step is intergral repreresentation.Planting in gap correspondto circling a letter, Pting crossing a line,...two letters.If you don't think so,we can try, you first, I second, I'll win.

所有跟帖： 

• for 1) come on 可憐的 Jinjing....非整數, -guest007- ♂ (114 bytes) () 03/21/2011 postreply 11:02:25

• 25 letters , it is not easy to do. I got this anwser in ten Mts. -jinjing- ♀ (202 bytes) () 03/21/2011 postreply 12:26:37

• 回複：for2)You are very far from understanding the problem. -康MM- ♀ (133 bytes) () 03/21/2011 postreply 15:53:23

• OK. -jinjing- ♀ (0 bytes) () 03/21/2011 postreply 16:05:17

• 康mm進 -guest007- ♂ (165 bytes) () 03/21/2011 postreply 16:46:37

• 回複：康mm進 -康mm- ♀ (127 bytes) () 03/22/2011 postreply 05:03:02