Started off with some mental math, then went into word and probability problems. Dice, cards, combinatorics, etc.Lots of estimation and "guess the number of hairs on your head" kind of problems. All over the phone.
Interview questions [1]
Question 1
Mental Math: One million minus one hundred eleven.
They tend to examine the logical thinkers that can communicate clearly and concisely, and some problem-solving exercises intended to explore how you gather and apply new information, very different from other tech companies' interviews.
Initial application and online assessment. Had a first round behavioral interview where they asked me about myself, my experiences, and a couple of brain teasers. The interviewer was very nice.
Phone interviews (at least 3) - questions were of mixed difficulty (some pretty hard) but the interviewers were friendly and they gave helpful hints. Kind of fun - review probability and game-type questions.