Several of my Year 11 students were writing model answers to English essay questions and recording these on their phones etc… as part of a rote learning exercise. They listen to the recording numerous times then just regurgitate in the NZQA exams. Apparently the questions are so predictable that this is an effective strategy for students that want high marks and have the nous and motivation to carry it out.
So, some exams are really just memory tests!
And if you want to pass Maths just go do the last few years NZQA exams, they more or less just change the numbers.