===> How many ethnic groups exist in Nigeria

Nigeria

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Hausa 27.4%, Igbo (Ibo) 14.1%, Yoruba 13.9%, Fulani 6.3%, Tiv 2.2%, Ibibio 2.2%, Ijaw/Izon 2%, Kanuri/Beriberi 1.7%, Igala 1%, other 28.9%, unspecified .2% (2013 est.)
note: Nigeria, Africa's most populous country, is composed of more than 250 ethnic groups

Source: The World Factbook