Bain & Company Part-time Assistant interview questions

First round online written tests, done on zoom. Pretty easy, with some calculation and case-based multiple choice questions. The second round is a phone interview with an AC at the office, asking about my resume and a market sizing question. Around 15 minutes long, the AC was friendly and didn't ask too-detailed questions

Was interviewed twice because the first one was probably not documented. The interviewer couldn't find my name on the name list. HR management is kinda messy. Some motivation questions and a mini case.