Jane Street Quant Interview: Three Point Dart Game Questions
Are you preparing for a quant research interview at Jane Street? These interviews are renowned for their rigorous probability, combinatorics, and problem-solving questions. In this article, we dive deep into a second set of real quant research interview questions previously asked at Jane Street. For each question, we provide a detailed solution, intuition, and step-by-step reasoning to help you master the concepts and ace your upcoming interview.
Question: You have two decks of cards:
You randomly draw two cards and win if both are the same color. Which deck would you prefer? What if the 26 card deck was randomly drawn from the 52 card deck? Which deck would you prefer then?
