Swap those numbers

 Posts: 22
 Joined: Sat Dec 14, 2013 3:28 pm
Swap those numbers
The numbers from $1$ to $n$ are written in a line in increasing order and at each time you are allowed to swap any two neighboring numbers. Now, is it possible to have this initial sequence of numbers after $2007$ such swappings?
Why so SERIOUS?!??!
Re: Swap those numbers
Please Install $L^AT_EX$ fonts in your PC for better looking equations,
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."  Sherlock Holmes
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."  Sherlock Holmes