Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2019-part-07 — 184 problems (EN–VI) Question 180

Math Olympiad Vault · MathNet 2019-part-07 — 184 problems (EN–VI)

Question 180

Do there exist five points in the plane, not all collinear, such that the distance between any pair is one of $\{1,2,3, \ldots, 9\}$?