Almost accepted BUT the final step is a math assessment for top applicants. What could be on it?

Hey guys! So, I just got informed today that I am one of the top applicants they chose for the program! However, there is a math assessment you have to take, and then they number everyone down depending on who does the best on it. They didn’t really give me much information on what it’s about, besides algebra and metric conversions… Does anyone have any idea what could possibly be on here? And what I should probably study the most? Thank you!!