Long story short, I struggle with a statistics exam at the university. Although I know how to solve all types of exercises and the rationale behind each of them, I still can't pass this exam, because we are supposed to know ninety formulas by heart. I am not complaining about the volume of work that has to be put in, because I did all that had to be done. Still, when practicing, I was looking every time on a sheet where I had all formulas needed.
During the exam, though, we were not allowed to use any help. I find it extremely hard to memorize ninety formulas by heart. I literally don't know how to memorize them; it would take me years to learn them by heart. How can I do this?
(Assume for the sake of this question that it’s too late to change the exam mode to one which does not require so much memorizing.)