First part of the interview was a Hackerrank question (double arrayed dynamic programming). The math was a little lighter, first some questions about the Poisson distribution and what’s the one property about it that is useful, then questions about the dividing cell problem (we take a cell at t=0 and after each times it divides but we don’t know how it divides, we just now the mean and variance of the number of cells after each division) and the question was to know when will we have 0 cell in the end or an infinite amount.