IMO Shortlist 1987 problem 9
Dodao/la: arhiva2. travnja 2012.
Does there exist a set
in usual Euclidean space such that for every plane
is finite and nonempty ?
Proposed by Hungary.
RemarkI'm not sure I'm posting this in a right Forum.
Izvor: Međunarodna matematička olimpijada, shortlist 1987