Скачать или смотреть Real Numbers – Episode 02, Always Take the Middle Taxi

Real Numbers is a series of math challenges for high school math enthusiasts looking to grow their skills to the next level. You don’t have to be a “mathlete” to solve these problems. All you need is a curious spirit, resourceful thinking, and a basic understanding of probability, geometry, and expected value.

Participants get the chance to submit answers for feedback or visit our website to learn about who we are and what we do.

At Jane Street, we use math creatively to solve real-world problems. If you think math only belongs in textbooks, we challenge you to tackle this 16-part series.

The problem of the week in this episode involves the probability of a certain arrangement of random cars at a traffic light. We then find a couple ways to compute the answer to the problem about dogsitting fluffy from the previous episode.

To submit solutions, questions or feedback, visit: https://www.janestreet.com/solutions

Too easy? To skip ahead to advanced problems, visit:
https://www.janestreet.com/bonus-prob...