5 rounds, hard math and probability questions, some competition and olympiad style, some standard dice and conditional probability questions. Seemed fair and challenging, appropriate for the role. I thought the length of the process was quite excessive and I assume that is due to their enormous applicant volume
Interview questions [1]
Question 1
What is the probability if you chose 4 points at random on a unit sphere the resulting tetrahedron contains the origin?
Unexpected question, mainly focus on intuition and quick thinking. Need to explain the whole thinking process. Make quick decision and estimation when there is no enough information, brain teaser type of question
Interview was great, and was ML and Stats based mostly. He went over probability question, and ML Architecture Question, then Options and stuff. It was good experience and I liked it.