2016(10-12月) 统计类 硕士 全职@goldman sachs - 网上海投 - 技术电面 |Otherfresh grad应届毕业生
面的是strats下面做risk的team说这个team 2/3的时间modeling 1/3的时间coding|
1. coin toss: the expected number of toss to get a HTH
2. draw cards: 3 red cards, 3 black cards, get one dollar if you draw black, fine one dollar if you draw red, you can stop anytime you want so what's the expected return or earning of this game.
3. plane seat: 100 people about to board the plane, the first one lost the boarding pass, so he randomly choose a seat to sit, the next 98 people will sit on their assigned seats if it's not taken otherwise they will randomly choose one. So what's the probability of the last person sits on his assigned seat?