Running a little off-topic, there is evidence that a Cambridge maths exam series 150 years ago had a pass mark of about one and a half percent, and the top scor

Running a little off-topic, there is evidence that a Cambridge maths exam series 150 years ago had a pass mark of about one and a half percent, and the top scorer achieved about 45 percent. https://en.wikipedia.org/wiki/Mathematical_Tripos https://en.wikipedia.org/wiki/Mathematical_Tripos