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Robinrobi Seo
Jun 16, 2022
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Have you ever encountered a "nonsensical" question in an interview? for example: How many ping pong balls can fit on a bus? What is the monthly income of a certain HEYTEA in Hangzhou? How many planes are there in Hangzhou at the moment? … When faced with this kind of problem, if the interviewee does not have a certain analytical thinking ability, he is often at category email list a loss, and then guesses a number by feeling. Even if you happen to guess the correct answer, your interview is likely to be difficult to pass. In fact, the purpose of the interviewer asking such category email list questions is not to ask for an exact answer, but to examine the interviewee's logical ability, analytical ability and ability to withstand pressure, how to use limited resources, and calculate a reasonable answer based on experience and methods. Answer. This type of problem is called the Fermi problem in English. 1. What is the Fermi problem The Fermi problem is named after the Italian-American physicist Fermi. He won the Nobel Prize in Physics in 1938, and he is better known as a seemingly absurd question he posed out of thin air in a class at the University of Chicago: "How many piano tuners are there in category email list Chicago?" Hearing this question, the students are all at a loss, even today, I believe most people do not know how to answer. Fermi suggested that if you encounter such a seemingly huge category email list problem, you can decompose the problem into some small problems that are easy to operate and understand, and then estimate the small problems based on guesses and assumptions. This is the core of the Fermi problem idea: logical disassembly. Let’s look directly at how Fermi answers this question: The number of piano tuners = the total working hours of all piano tuners in the whole year / the working hours of each tuner in the whole year category email list This breaks down into two questions: The total working time of all piano tuners in the whole year = the number of pianos * the number of tunings per year * the length of tuning Annual working hours of category email list each tuner = number of working days * working hours per day Then we only need to estimate the number of pianos, the number of tunings per year, the tuning time, the number of working days, and the daily working hours.
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