Clipboard Associate Product Manager interview questions

Automated email to ask you to do a case study on their product - no human interaction and essentially free work prior to even getting an interview. Didn't bother completing.

I was given a long-winded case study to analyze and then asked to create a written document showing my thinking and outlining the steps I took to get there. I was invited to interview after submitting the work (which included hours of work), and the interviewer pushed heavily on non-written case hypotheticals to test my quant skills. It felt like a bait and switch with what I expected for the interview given the materials. If I knew their focus was on solving math problems I would have prepared and approached the opportunity differently.