Skip to content / Đến nội dung
ThichHocToan.com

ITOT 42 Autumn 2020 - THCS A - Additive practice Question 2

ITOT · ITOT 42 Autumn 2020 - THCS A - Additive practice

Question 2

A pair of distinct positive integers is lovely if both its arithmetic and geometric means are integers. Does every lovely pair have another lovely pair with the same arithmetic mean? Pairs $(a,b)$ and $(b,a)$ are regarded as identical.