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      Five Rings

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      Quantitative Researcher Interview

      20 Mar 2018
      Anonymous interview candidate
      New York, NY
      No offer
      Negative experience
      Difficult interview

      Application

      I applied online. I interviewed at Five Rings (New York, NY) in Mar 2018

      Interview

      Was contacted after online application. An HR reached out within a week. I had a phone call with her with behavioral question and a few technical ones. The interview itself was really mechanical, with someone who didn't really care about what my profile was, nor essaying else about my background. It contained some behavioral questions (same as everyone else for the number of hours for 75% more of salary). All the questions were almost surely on a paper on which she was ticking boxes, or at least that's what it felt like. Expect a lot of estimations and maths questions to be solved within 30 secondes, with no interest at all for your approach since 80% of the questions require only to answer a number. Will describe the questions below.

      Interview questions [7]

      Question 1

      Total number of kangaroos in Africa
      Answer question

      Question 2

      Total quantity of beef eaten in the US in a year
      Answer question

      Question 3

      Derivative of x^x taken in 2
      1 Answer

      Question 4

      Weight of a aluminium tennis ball
      Answer question

      Question 5

      3^3.8
      Answer question

      Question 6

      ln(214)
      Answer question

      Question 7

      X follows Unif(-1,1) —> Cov(X,X^2) —> Cov(X, X^4)
      1 Answer
      9

      Other Quantitative Researcher interview reviews for Five Rings

      Quantitative Researcher Interview

      11 Nov 2025
      Anonymous interview candidate
      New York, NY
      No offer
      Negative experience
      Difficult interview

      Application

      I interviewed at Five Rings (New York, NY)

      Interview

      Five Rings’ Online Assessment 19 questions, 2 or 3 minutes. Tests mental math, estimation, combinatorics, quick logic, and probability intuition—very speed-intensive. After finishing OA, I received rejection within just 10 minutes.

      Interview questions [1]

      Question 1

      What's the probability of seeing THH before HHH?
      Answer question

      Quantitative Researcher Interview

      30 Oct 2025
      Anonymous interview candidate
      New York, NY
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Five Rings (New York, NY)

      Interview

      Online assessment on probability questions. Each question has either 2 or 3 minutes limit. After that I had a short HR call. Did one technical round with a researcher who asked me about algorithm.

      Interview questions [1]

      Question 1

      HR said the tech interview will be on probability but being asked algorithm.
      Answer question

      Quantitative Researcher Interview

      11 Jul 2024
      Anonymous interview candidate
      No offer
      Negative experience
      Difficult interview

      Application

      I interviewed at Five Rings

      Interview

      Online interview with HR person firing maths questions at me. Was unable to clarify on the questions being asked, so I don't think she understood the questions she was asking. Very frustrating experience

      Interview questions [1]

      Question 1

      Lots of quickfire difficult maths problems
      Answer question