5-tuple with property sum of any 3 is divisible by the sum of the other 2
Source: 2000 German Federal - Bundeswettbewerb Mathematik - BWM - Round 1 p2
January 27, 2020
number theorySumdivisible
Problem Statement
A -tuple has the property that the sum of any three of them is divisible by the sum of the remaining two. Is there a -tuple with this property whose all terms are distinct?