WorldQuant interview questions

I applied for summer research intern during an on-campus event. First round is an online test, including 40 problems of calculus, linear algebra, probability, basic algorithm and simple brain teasers. After that I have three rounds of one-hour phone screen interviews. The phone interviews are mostly technical (algorithm, probability and brain teasers), with some behavior questions only on the end of the third round. After that there is a on-site interview.

A single test of my skills. Interviewer was extremely helpful and patient with me. Sent me books titles for me to grab and prepare. Although, I did not quite live up to expectations, I have respect for the recruiting bodies.