From a set of 2n+1 consecutive integers a certain number, say x, is selected in a way that the remaining n pairs can be arranged as couples having the same sum.

What are all the possible values of x making such task doable?

(In reply to Not feeling literal by Steve Herman)

IT IS NOT       x numbers...........to be removed

Posted by Ady TZIDON on 2018-02-14 08:58:22