Wolof is the native language of the Wolof people, spoken in Gambia, Mauritania and Senegal. Although French is the official language of Senegal, almost all Senegalese people speak Wolof either as native language (40%) or a second language (40%).
The famous “7 seconds” song by Youssou N’Dour is sung partly in Wolof.
The Wolof numeral system revolves around the numbers “5” and “10”. For example: benn = 1, juróom = 5 so juróom-benn = 6.