Oloyede jamb generated n20bn in three years
I think there may be some misinformation here.
Oloyede is not a person who generated N20 billion in three years. In fact, I couldn't find any information on an individual by that name who has achieved such a feat.
However, I think you may be referring to Professor Is-haq Oloyede, the Registrar of the Joint Admissions and Matriculation Board (JAMB). Under his leadership, JAMB has indeed generated significant revenue for the Federal Government of Nigeria.
According to reports, JAMB generated N15.18 billion in 2017, N13.56 billion in 2018, and N14.38 billion in 2019. These figures are impressive, but still short of the N20 billion you mentioned.
It's worth noting that JAMB's revenue is generated primarily from the sale of Unified Tertiary Matriculation Examination (UTME) forms, as well as other services such as the sale of admission letters and other documents.
I hope this clears up any confusion. Let me know if you have any further questions!