J'ai passé un entretien chez Optiver (Chicago, IL)
Entretien
First round Online Assessment with mental math section (15 mins), then a probability section (9 mins), and then 2 coding questions (45 mins). Then phone screen after meeting threshold. didn't make it further.
Questions d'entretien [1]
Question 1
probability of placing numbers 1-9 onto a 3x3 grid such the sums of every column and row are odd