OA first, with a hybrid of brain teasers, stat and prob, combinations, calculus, etc. Better get an idea of the question first otherwise hard to finish without any mistakes. Then several rounds of tech, variety of questions, mostly card game / coin probabilities, but there is a few brain teaser can be tricky. very hard to prepare. Then data exercise, and final round. Did not make it..

Phone Screen, only problem-solving, no research deep dive or behavior question, one about linear regression, one about three candidates voting problem, an algorithm problem about sorting. It was not so difficult but I was not well prepared so I failed.