Google Associate PM interview questions

I had a referral from a friend, so I was able to go straight to the interview stage. I was in touch with a recruiter who scheduled my interview so that I had 3 weeks to prepare. 3 weeks is enough to be honest but I didn't put in enough time. Once it came to the interview I got asked standard PM questions (similar to the ones found in Cracking the PM interview), and one market-sizing question. I did badly on this question which is what let me down. I was notified 4 days later that the hiring committee decided not to take my application forward.

Standard interview process, firstly you were asked to introduce yourself, then you were asked to talk about a project in which you excelled. The reviewer may raise some questions based on your answer. Then come the technical review. The process takes around 30 min, which is fine.