Related question.
I’d like to stop asking my usual 3d math / linear algebra questions in the interview and move them to a pre-screen. The questions are basically just so I can gauge people’s ambient math fluency, and the problem is that most people freeze in the headlights and then I have to waste precious interview time reassuring them that they have not blown the test. Anybody had luck with a good way to approach this? I don’t want it to feel like a high school final and I also do want to know if somebody can’t understand a basic dot product or a matrix multiply.
Thoughts? Good resources? What I’d really love would be some kind of online testing service that just gave me a nice normalized score that I knew was apples-to-apples across candidates.