Tags: Language.
Gwandara is a West Chadic language and the closest relative of Hausa. Its several dialects are spoken in northern Nigeria by about 30000 people.The Nimbia dialect has a duodecimal numeral system whereas other dialects such as Karshi below have decimal systems:It is thought that Nimbia which is isolated from the rest of Gwandara acquired its duodecimal system from neighboring East Kainji languages. It is duodecimal even to powers of base twelve: