Question 1: There are 3,000 apples located on one side of a 1,000-mile-wide desert. You have a truck that can carry up to 1,000 apples but drops 1 apple it is carrying every mile it travels. What is the greatest number of apples you can transport to the other side of the desert?
Questions d'entretien [1]
Question 1
Question 2: A chest contains a treasure that is equally likely to be worth any amount between $0 and $1,000. You may bid on the chest, but you only get it if you bid more than the value of the treasure, x. You can resell the treasure for 1.5x. What should you bid?
J'ai postulé en ligne. Le processus a pris 3 semaines. J'ai passé un entretien chez Jane Street (Londres, Angleterre) en oct. 2013
Entretien
3-4 rounds of phone interview and an on site interview, all in all very decent company with nice interviewers. Solving and calculating in head is a bit of a pain but not much of a problem after you get used to it. Definitely do some preparation prior to interviews.
Questions d'entretien [1]
Question 1
At the bus stop 3/4 of commuters leave the bus and 7 new come in. This process repeats 3 times. What is the minimal number of people initially in the bus.