Envié una solicitud electrónica. Acudí a una entrevista en Jane Street
Entrevista
30 minute phone interview. The interviewer asked approx. 9 math questions ( 3 mental math, 3 probability and 3 word problems). I was given approx. 30 seconds per question. Answered at least 7 of them correctly.
Preguntas de entrevista [1]
Pregunta 1
What is the probability of getting a sum of 10 if you roll three dice?
Envié una solicitud electrónica. Acudí a una entrevista en Jane Street
Entrevista
The interviewer was very informative. The questions appeared basic initially, but they required deeper reasoning, strong fundamental knowledge, and careful problem-solving instead of simple, straightforward answers throughout the interview process.
The process was structured and intellectually challenging. It typically involves an initial recruiter screen, followed by probability, mental math, expected value, and game-style problem-solving interviews. Interviewers focus more on reasoning, communication, and adapting to feedback than memorized answers.
Preguntas de entrevista [1]
Pregunta 1
You have two opaque boxes in front of you. At each turn, you may choose one of two actions:
Place: put one coin into one of the two boxes, chosen uniformly at random.
Take: choose one of the two boxes uniformly at random, take all the coins inside, and empty that box.
You play for exactly 100 turns. Your goal is to maximize the expected number of coins you collect.
What is your optimal strategy?
Several phone calls to go to the final round. The phone calls consists of mathematical, probabilistic brain teasers which was not that hard for a mathematics major. Final round was to harsh for me, strong mentality is required