Quite hard, few probability questions but they did give hints
Interviewer was nice, hour long interview with mostly technical questions and a few behavioral questions (tell me about yourself)...
The interviewer said there were a couple of rounds to get the winternship role
Neutral experience
Difficult interview
Application
I interviewed at Five Rings (New York, NY)
Interview
OA was on mental math, probability, and geometry. You need to answer the questions extremely quickly. Make sure you are submitting your answers correctly as the software is a little awkward.
Only did the OA, got questions such as estimating the Arc length of sin(x) from 0 to pi. Is rapid fire, with ~20 mins for 15 of these difficult questions.