Worthix interview question

First round was a simple NLP case about output rating. Second round was a coding problem. Coding itself was not hard, but they will ask some statistics questions to you to prove the correctness of your code. Third round was a panel interview primarily to talk about your experience. They might also ask you to explain ML term to business people. The last round was a total mess, they send out very loose guidelines and case scenario prior to the interview, and I prepared for a complete wrong direction.