Polytechnique math exam video surfaces

- A French YouTube video follows an École Polytechnique candidate facing the legendary 'Maths B' exam, highlighting elite timed problem-solving and pressure. - The clip surfaced under Jane Street-related searches and showcases oral reasoning, combinatorics, conditional probability and composure skills prized in top quant interviews. - The video suggests firms like Jane Street value raw mathematical reasoning and composure under timed pressure in recruiting. (youtube.com)