Ho presentato la mia candidatura online. La procedura ha richiesto 2 settimane. Ho sostenuto un colloquio presso Jane Street (New York, NY) nel mese di feb 2011
Colloquio
submit the application online and then get the phone interview
Domande di colloquio [3]
Domanda 1
1) Tow coins, P(head)=1/3, P(tail)=2/3, design a way to get the effect of fair coin
2) A. 10 ropes, each one has one red end and one blue end. Each time, take out a red and a blue end, make them together. Repeat 10 times. The expectation of the number of loops.
B. 10 ropes, no color. All the other remains the same.
3) Poker. 26 red, 26 black. Take one every time, you can choose to guess whether it’s red. You have only one chance. If you are right, you get 1 dollar. What’s the strategy? And what’s the expected earn?
