Market sizing practice
Market sizing practice that builds real estimation instinct
Work through market sizing questions out loud with an AI interviewer, then get scored on structure, assumptions, and math — instantly.
Free tier: 2 cases and 3 drills — no card required
Market sizing questions test whether you can break an unknowable number into estimable parts, state clean assumptions, and do the arithmetic without losing the thread. They show up in nearly every consulting interview.
Case Edge lets you practice them aloud and scores each attempt on structure, the quality of your assumptions, and your math — with timestamped quotes so you can see exactly where an estimate went off the rails.
Top-down and bottom-up
Practice both estimation approaches and learn which one fits the prompt — the choice itself is part of a strong answer.
Assumption discipline
Feedback flags shaky or unstated assumptions, so you learn to anchor every estimate to something defensible.
Mental math under pressure
Build the speed and accuracy to carry big numbers through several steps without a calculator — and without panic.
Market sizing questions to practice
A sample of the estimation prompts in the library, from quick warm-ups to hard ones.
How many EV charging stations does the US need by 2030?
Size the global market for wireless earbuds
How many coffees does a major airport sell per day?
What candidates ask about this prep.
Format, grading, and how the practice works — the practical questions before your first mock.
A market sizing (or estimation) question asks you to estimate a quantity — a market’s revenue, a number of units, a population — by breaking it into parts you can reason about. Interviewers use them to test structured thinking and comfort with numbers.
You’re scored on the structure of your breakdown, the quality and clarity of your assumptions, and the accuracy of your math, with timestamped quotes showing where each part of the score came from.
Yes — that’s the point. You speak through the estimate with a live AI interviewer that reacts and probes, just like a real round, instead of typing or doing it silently.
Walk in with the reps already done.
Run your first graded mock in the next five minutes. Pick a case, talk it through out loud, and read the report.
Start practicing freeFree tier: 2 cases and 3 drills — no card required