Selenge aymag (Сэлэнгэ аймаг) is one of the 21 provinces of Mongolia. It is located in the north of the Mongolia. Its capital is Sühbaatar. Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ... This article is about the year 2000. ... Image File history File links Drawn by Nanshu. ... Mongolia is divided into 21 aymags (provinces). ...