Y by anser, itslumi, v4913, megarnie, Rounak_iitr
Find all lists
of non-negative real numbers such that the following three conditions are all satisfied:
A permutation of a list is a list of the same length, with the same entries, but the entries are allowed to be in any order. For example,
is a permutation of
, and they are both permutations of
. Note that any list is a permutation of itself.

;
;
- there is a permutation
of
such that
A permutation of a list is a list of the same length, with the same entries, but the entries are allowed to be in any order. For example,



This post has been edited 1 time. Last edited by alifenix-, Apr 18, 2020, 10:04 PM