And we all thought it was just a stereotype.
In the UK's defense though, that diagnostic test is just that, a diagnostic, used to test the overall level of maths ability in the class (since there are no entry test on most university courses, and most courses only require a GCSE in maths), I've taken a diagnostic test, and there were harder questions than that. As for the Chinese problem given, that stuff is usually covered at A level (I.E. the 2 years before uni).
Ad no, I'm not going to solve, I might remember how to do it, but I can't be bothered.