Updated September 2026 · By Dr. Florian Smeritschnig, former McKinsey Senior Consultant Market sizing questions ask you to estimate the size of a market, like the number of pizzas sold in the US each year, with no data and no calculator. You answer them in six steps: clarify, structure, assume, calculate, sanity-check, and interpret. Interviewers score…
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Florian spent five years at McKinsey as a Senior Consultant and is a highly experienced consulting interviewer and problem-solving coach. Having conducted interviews with hundreds of candidates, he understands exactly what top-tier firms look for in successful applicants.
He founded StrategyCase.com to make top consulting careers more accessible by providing tailored, up-to-date insights into the recruiting process. Recognized as the most successful case and fit interview coach, Florian has helped his clients secure 700+ offers at MBB, Tier-2 firms, Big 4 consulting divisions, in-house consultancies, and boutique firms over the past four years.
He is the author of “The 1%: Conquer Your Consulting Case Interview,” “The 1%: Case Interview Workbook,” and “Consulting Career Secrets”, all available on Amazon.
