Economics had a question like that, something along the lines of "why do men earn more money than women?". BOS is trolling, making us be all stereotypical.
A big waste of time imo. Im selling the "mastering the exams" notes they gave out. The notes are quite helpful to get a few ideas about study/remembering techniques but not worth sitting there for hours.
Maths in Focus teaches you the basics, its good to use it in class but then move onto Fitzpatrick or Cambridge to see what "harder" questions look like and if you can do it.