Questions d'entretiens - Derivatives trader


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On a demandé à un Derivatives Trader...18 janvier 2016

If A and B are playing tennis and the score is 30-30, what is the chance that A wins the game? Assume on any given point, A has a 0.7 chance of winning the point (and B 0.3)

4 réponses

The way I approached it was as follows: Starting from the initial state, one player has to win 2 points in a row to win. If that does not happen, we're back to the initial state. Therefore, P(A) = 0.49, P(B) = 0.09, P(repeating) = 1 - P(A) - P(B) = 0.42 I enjoy using the intuition that A is 49/9 more likely to win and then find the probabilities by dividing both by 0.42 (making 49 and 9 add up to 100 while preserving their proportions). Grats on the JS offer! Moins

Shouldn't it be 0.7?

84.5 % (sum of 0.49x(0.42)^n)

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Group One Trading

Given two die, what is the probability that the sum when rolled would add up to six?

4 réponses


5/36 is right.... Combinations that add up to six: 1 and 5, 2 and 4, 3 and 3, 4 and 2, 5 and 1. So we have 5 successes. There are 36 individual outcomes because there are 6 sides on each die and 6*6 = 36 So we have 5/36. Moins


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4 réponses


Actually, +/- 12

Hey, could you please tell me more about the final round interview at their office? Moins

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Group One Trading

100 pennies in a jar. 1 penny has 'heads' on both sides. You pick a penny out of the jar and give it to your friend (without looking at the penny). Your friend flips the penny in the air and gets 7 heads in a row. Which penny do you have? Why?

3 réponses

Chance of 1 Heads = .5 Chance of 7 heads in a row = (.5)^7 to do this in your head think of fractions... (1/2)^7 = (1/2*1/2=1/4, * 1/2=1/8, * 1/2 = 1/16....if you do it seven times you get 1/128. so you have a better chance to pick out the penny with two heads (1/100) than to get 7 heads in a row (1/128) Moins

99 times out of 100 you take the normal penny. prob that normal penny give 7 heads in a row is 1/128. so, prob that he has special penny is 1/100 / (1/100 + 0.99*1/128) = 56.2% Moins

~56.4% that you have the 2-headed penny.

Eni Spa

If the current market is in contango and you are short are you losing money or making money?

2 réponses

You’re making a profit. Selling at a higher price than what you bought

The simple answer is that if you are short on a contango curve then you are losing money, for the curve is sloped positively. Moins

Group One Trading

You're a casino introducing a new game. The games rules: Playing cards numbered 1 through 10 lay face down on a table, the customer picks a card and whatever number it is he/she wins that dollar value. Ex. I flip a 2 over, I win 2 dollars. Question: How much do we charge for the game? Why?

2 réponses

1+2+3+4+5+6+7+8+9+10=55 55/10 = 5.5 = Average Expected Winning Price it higher then that number to be profitable Moins

Whatever will maximize the value from your customers.

Futures First

Which sports do you follow? Give me the current standing of the teams in the league/tournament?

2 réponses

Football EPL/ Top 5 current standing are Manchester city, Manchester United, Tottenham Hotspur, Chelsea, watford Moins

Cricket. Current standing are Australia, india,sa,nz,sl,eng,pak,wi,ban,zmw

What is your experience in trading and Monthly PNL

1 réponses

I told them my details


Give me a trade idea today that will make money.

1 réponses

Depends on your risk appetite, the assets you can trade. Knowing they were essentially hedging on STIR futures I suggested a 30% eur mix on a bund gilt - looked at me blankly. Moins


why u want to join sharekhan basic knowledge of stock market derivative market equity market

1 réponses

not tough interview only basic knowledge of stock market derivative market equity market knowledge, future option nifty..basic knowledge of stock market derivative market eq Moins

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