MBB Math Guide

The interviewer slides a number across the table, the mental clock starts, and a perfectly capable person goes silent, scrawls something unlabeled in a corner of the page, and produces an answer with no idea whether it's plausible. This guide fixes that. It distills MBB quantitative interviewing down to the seven patterns that show up again and again: market sizing, breakeven, profitability trees, ROI and payback, the margin-versus-markup trap, capacity and utilization, and unit economics. It works each one through a full, spoken-aloud solution, the way you'd actually deliver it in the room. You'll learn to frame the equation before you calculate, round aggressively and say so, sanity-check every number against the real world, and close with the one sentence that separates a calculator from a consultant.