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11 jul. 2014

17 jul. 2018
 You start a tennis game at 30-30. You have a probability of winning each point of 0.6. What is the probability of you winning the game?5 antwoordenNot possible to answer, as a deuce can be infinitely longTo the candidate on Jul 17, 2018: Thats where you use series to add up the probability 0.36(1+0.24+0.24^2+0.24^3+0.24^4.....)let me just change the numbers up there 0.36(1+0.48+0.48^2+0.48^3+0.48^4.....+)Toon meer reacties So there are three states, of which you must calculate the probability of achieving two consecutive wins. The first state we'll call the 'even' state because it begins like at the beginning (30-30) where neither player has an advantage. We'll denote this state with P(HH|even). The second and third states are where you and the opponent each have an advantage, respectively. We'll denote these states with P(HH|win) and P(HH|loss), respectively. Now we can see that P(HH|even) = 0.6*P(HH|win) + 0.4*P(HH|loss) (to clarify: the constants represent the case of whether you win or lose the first match from an even state. For example, because you have a 0.6 chance to win the first match, afterwards you are then now in the P(HH|win) state. Same for loss) Now we must formulate the other probabilities which follows in the same vein: P(HH|win) = 0.6*1 + 0.4*P(HH|even) (again to clarify: you have a 0.6 chance to win the second match, if so resulting in a victory. There is also a 0.4 chance to lose, in which case you are at deuce again you return to the even state) Similarly, P(HH|loss) = 0.4*0 + 0.6*P(HH|even) From here you plug both into original equation and arrive at P(HH|even) = 36/52 This question is not infinitely long, there is a finite solution. The key difference is that we are able to imbed this quality of infinity into the probabilities. As you can see the probabilities from an advantaged state go to the even state, and the even state goes to the advantaged state, ad infinitum. If you'd like to research more about these types of problems this question breaks down into a simple Markov Chain coin flip with a weighted coin, exit condition, and even state. Dit bericht is verwijderd. Zie onze Gedragscode of Gebruiksvoorwaarden voor meer informatie. Zie onze Gedragscode of Servicevoorwaarden voor meer informatie.

Trainee Trader bij Priogen Group werd aangegeven...

7 mrt. 2016
 What makes you a good trader?4 antwoordenWhat do the second and third interviews consist of?2nd is an interview with Trade Floor Manager and 3rd with a VP.What else were you asked in your HR interview?Toon meer reacties Well their HR Manager is pretty strong, and does not ask all this behavioral BS that other recruiters do. In general he wants to find out what are your goals in life (in 5 years) and with the company. You go with your CV and then find strong and week points for a trader and how can you cope with them. He wants to know you. The guys that are selected need to breathe and live with trading, at least that is what I got from it.

19 aug. 2016
 Make a market on the number of kangaroos in Australia.3 antwoordenImportant thing is to be able to improve bid-ask by observing what the interviewers do.hey, could u please tell me more about the final round at their office?Depends on what position you are interviewing for, but for an internship, there is one HR and one technical interview. HR interview is straightforward, work on your CV and some "stories" and you will be fine. For the technical interview, you need to be proficient in probability and market making questions. You also need to be fast, certainly. There are these mental math tests too, but I assume you know these by now. Do your best and good luck!

28 dec. 2017
 Mouse is to elephant as small is to...3 antwoordenbigHey! Can we talk regarding the final round?Can you tell us about the final case?

25 jul. 2018
 Two brain teasers at the end of the interview3 antwoordenHi, thank you for sharing your experience. Could you please share little bit more about the brain teasers at the end of your interview? Would be highly appreciated! Thanks.Hello, I am appearing for Flow Traders interview and would be glad if you can share the type of brain teasers that were asked.Hi, also want some advices on Brainteasers. Thanks !!

11 mei 2021
 Robot is 3 cm from the left of the table and 17cm from the right of the table. The robot moves with equal probability 10cm to the left or to the right. What is the average number of steps for the robot to fall of off the table?4 antwoordenThe answer is 2 stepsDefine a function f(x) = the average number of steps until falling off if the robot is xcm from left of the table. Then f(x) = 0 for x ≤ 0 and x ≥ 20 (20 is the sum of the distances to the left and right; the width of the table). For the remaining 0 ≤ x ≤ 20, f(x) = 1 + f(x - 10)/2 + f(x + 10)/2. Now we just follow our nose to find f(3): f(3) = 1 + f(-7)/2 + f(13)/2 = 1 + f(13)/2 We now need f(13): f(13) = 1 + f(3)/2 + f(23)/2 = 1 + f(3)/2 Now plugging this back into the original f(3) equation: f(3) = 1 + (1 + f(3)/2)/2 Which we can solve to get f(3) = 2. A faster way might be to realise that since the probability of left and right steps is the same, taking one step left will send us off the edge, but taking one step right will put us in a mirror of our original situation. If the average number of steps to fall off was S, then we would immediately know S = (1 + S)/2 which solves to S = 2.Toon meer reacties In every step, the probability of falling off is p=0.5. Hence the number of steps has a geometric distribution, which has expected value of 2=1/p Dit bericht is verwijderd. Zie onze Gedragscode of Gebruiksvoorwaarden voor meer informatie. Zie onze Gedragscode of Servicevoorwaarden voor meer informatie.

19 jan. 2021
 What makes a good trader? Are you competitive, and if so do you have specific examples?2 antwoordenDo you have any tips on the case study?Can you tell us about the case study?