wow..
thank you..so far i only think how the numbers can have the same way to arranged
and that makes me forget what the true question is,,to prove that its a possible sequence!..
thank you sooooo much! ^^
Homework Statement
my english isn't very well so i'll just write the question from my handbook
show that it is possible to arrange the number 1,2,3,...,n in a row so that the average of any two of this numbers never appears between them
[HINT : show that it is suffice to prove this fact...