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During the third interview : imagine an infinite chess board. If the horse from 1 case, in how many cases can he possibly ends after 10 moves. You actually don't have to give a number but a 95% confidence interval. pen and paper allowed
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Junior Trader

Interviewed at Jane Street

4.4★
1 Mar 2012

During the third interview : imagine an infinite chess board. If the horse from 1 case, in how many cases can he possibly ends after 10 moves. You actually don't have to give a number but a 95% confidence interval. pen and paper allowed

First round was a brainteaser/statistics/probability round. First question: you have two fair dice, the sum of which is equal to the value of a security. You have a call option on this security with a strike price of 7. If you are two roll each die once to give you the security value, what are you willing to pay for this call option? Second Question: You have two coins, one fair coin and one with heads on both sides. You randomly choose one of the coins and flip it twice. The results are heads and heads. What is the probability that the coin you flipped is a fair coin. Third Question: You have a spherical balloon that is deflating at a rate such that the radius is decreasing at a constant rate of 4cm/min. At what rate is the balloon deflating when the radius is .25cm. Fourth Question: You have a circle with a radius of one. What is the probability that two randomly chosen points connected by a chord have a length greater than 1? Second Round was all fit. Seems like a pretty unique firm in terms of culture (ski trips, paintball, golf, etc.). The first two guys I interviewed with seemed pretty cool, but the guy from the third round seemed like a hardo. Third Round: They ask you to spend 10 hours reading Hull's textbook on options and futures, which is just about enough time to learn the very basics of options and futures if you have no background. I interviewed with a French guy with a very heavy accent, making it real difficult to comprehend anything coming out of his mouth. First Question: You have a revolver with six chamber slots, and you load two bullets next to each other. You fire the gun once and it's not the bullet. You have the option to either re-spin the chamber, or fire again. Which gives you the higher probability. Second Question: Call option at the money with strike of 100. What is a rough value for the price of the this option. What is the delta of this option?
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Junior Trader

Interviewed at TransMarket Group

4.1★
11 Sept 2014

First round was a brainteaser/statistics/probability round. First question: you have two fair dice, the sum of which is equal to the value of a security. You have a call option on this security with a strike price of 7. If you are two roll each die once to give you the security value, what are you willing to pay for this call option? Second Question: You have two coins, one fair coin and one with heads on both sides. You randomly choose one of the coins and flip it twice. The results are heads and heads. What is the probability that the coin you flipped is a fair coin. Third Question: You have a spherical balloon that is deflating at a rate such that the radius is decreasing at a constant rate of 4cm/min. At what rate is the balloon deflating when the radius is .25cm. Fourth Question: You have a circle with a radius of one. What is the probability that two randomly chosen points connected by a chord have a length greater than 1? Second Round was all fit. Seems like a pretty unique firm in terms of culture (ski trips, paintball, golf, etc.). The first two guys I interviewed with seemed pretty cool, but the guy from the third round seemed like a hardo. Third Round: They ask you to spend 10 hours reading Hull's textbook on options and futures, which is just about enough time to learn the very basics of options and futures if you have no background. I interviewed with a French guy with a very heavy accent, making it real difficult to comprehend anything coming out of his mouth. First Question: You have a revolver with six chamber slots, and you load two bullets next to each other. You fire the gun once and it's not the bullet. You have the option to either re-spin the chamber, or fire again. Which gives you the higher probability. Second Question: Call option at the money with strike of 100. What is a rough value for the price of the this option. What is the delta of this option?

I was asked to describe in detail the hedges I would implement to protect myself on a cargo of Petroleum bought today for future delivery in one region on local pricing with intention to deliver if by sea to a different region on totally different pricing.
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Junior Trader

Interviewed at Trafigura

3.5★
26 June 2012

I was asked to describe in detail the hedges I would implement to protect myself on a cargo of Petroleum bought today for future delivery in one region on local pricing with intention to deliver if by sea to a different region on totally different pricing.

Two people are 60 km apart. If the two people, one travelling at 25 km and another at 35 km, will collide into each other and there is a fly that can travel at 40 km, then how much distance will the fly cover before the two people collide? If there is one pad in a pond and the number of pads doubles every day, it'll take 30 days for the pads to fill the pond. How long will it take for the pads to fill the pond if there were 8 pads on the first day? A person asks his friend the ages of his three daughters. The friend says that if their ages are multiplied then the answer is 36. The person says "that isn't information". The friend says that if you add their ages then it's equal to my house number. The person says there still isn't enough information. The friend says that my youngest daughter has blue eyes. The person says "OK I know now". What are the ages of the daughters?
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Junior Trader

Interviewed at Cobblestone Energy

4★
25 Oct 2020

Two people are 60 km apart. If the two people, one travelling at 25 km and another at 35 km, will collide into each other and there is a fly that can travel at 40 km, then how much distance will the fly cover before the two people collide? If there is one pad in a pond and the number of pads doubles every day, it'll take 30 days for the pads to fill the pond. How long will it take for the pads to fill the pond if there were 8 pads on the first day? A person asks his friend the ages of his three daughters. The friend says that if their ages are multiplied then the answer is 36. The person says "that isn't information". The friend says that if you add their ages then it's equal to my house number. The person says there still isn't enough information. The friend says that my youngest daughter has blue eyes. The person says "OK I know now". What are the ages of the daughters?

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