No End of Right Answers
Thanks to the new LaTeX option in Warwick blogs, I can hint at the clever things assessment software is doing nowadays to seek out deep learning, at least for mathematics.
For an exercise like: "Give an example of a sequence that converges to e", it can tell that
and infinitely many more such answers are all correct. Chris Sangwin's brainchild STACK can do this: STACK (System for Teaching and Assessment using a Computer algebra Kernel) is an open-source system for computer-aided assessment in mathematics and related disciplines; it uses the open-source computer algebra system Maxima.