可能是全CD最晚的UCSD面经。爆个面经攒人品，虽然好像之前论坛上都有了……
- 没变
- 一支圆珠笔能写多远？assumption+info？（这个简单 说完还有30s)
- 通常用什么programming languages？在哪学的？最近怎么用的？（反正就是和之前表述不一样了 但差不多一个意思）
- 分享与stat prob regression相关的课程，一般怎么用 details？（也是表述不太一样了）
- writing和之前差不多，就是变成 initiative和向supervisor解释....（我没来得及检查...总感觉自己打错了好多单词好难受）
呜呜希望有戏！
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还有就是我汇总的第二题题库：
2020
- How much money is spent in total on shoes by everyone living in your country? How much of that is spent on sandals? estimate the number of 10 years old in your country
- How you would determine how many loaves of bread are consumed in a single day around the world? How did you come to this number and what assumptions are you making? What pieces of information would you need to know to come up with a more accurate answer?
- 假设从地球走路走到月球是可行的，需要几年时间? 给出assumption，以及什么infor可以让结果more accurate。
- 此时此刻有多少飞机在头顶飞？
- 估算你的国家有多少把钥匙，其中有多少钥匙will be used in daily basis？说出你的assumption和 3 information needed（120秒）
- how many taxi cabs are there in the largest city in your home country? How many are currently being driven and how many are not? 也是提出assumption, 但没说需要3个information，只说what pieces of information would you need to know to come up with a more accurate answer.
- 人一辈子要睡多长时间的觉（这个题我真的无语了 他的难度设置在哪里我至今不知道）
- 数到1Million要用的时间？
- 25kg的大米有多少米粒？
- 全世界海洋里有多少条鱼？
- 一只圆珠笔能写多远？
- How many people worldwide are in automobiles at any given time？
- Tell me how you would determine the number of times you could say the English alphabet in 24 hours. In doing so, please share all your assumptions with us so we can understand how you are figuring out this problem. What pieces of information do you need to find the real answer to this problem?
- How many taxi cabs are there in the largest city in your home country? How many are currently being driven and how many are not? 也是提出 assumption, 但没说需要3个information，只说what pieces of information would you need to know to come up with a more accurate answer.
- How many pieces of popcorn does it need to be filled in the cinema? 有多少unpoped的？
- If you played your favorite song continuously for a year, how many times would it play? How did you come to this number and what assumptions are you making? 17. What pieces of information would you need to know to come up with a more accurate answer （我遇到的 感觉是最简单的 说完还有剩下时间。。）
- 此时此刻有多少automobile在公路上跑？
- How you would determine how many loaves of bread are consumed in a single day around the world? How did you come to this number and what assumptions are you making? What pieces of information would you need to know to come up with a more accurate answer?
- How many keys do you think are owned by people in your country? How many of these keys are used on a daily basis? As you come up with the answer to this question, please share with us your assumptions. Also, please share the three pieces of information you would need to know to get a much more accurate answer
- 全世界一天喝掉多少杯咖啡，其中有几杯是加糖的，以及哪三个信息让预测更准确？
- 你的hometown有多少light bulb，早上十一点大概有多少是开着？的
- 你的hometown有多少gas station?又有多少electronic charging station?提出你的assumption，哪三个信息能让你更准确的估计？
- 预估你的家乡每天会扔掉多少饮料瓶，多少是塑料的，多少是玻璃的，哪三个因素会让你有更准确的数字。
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