Consulting Brainteasers: 15 Practice Questions + Solver’s Guide (2026)
Updated May 2026 · By Florian Smeritschnig, Former McKinsey Senior Consultant Consulting brainteasers are short logic, math, or lateral-thinking puzzles used by tier-2 firms, the Big 4, boutique consultancies, and in-house consulting teams to test structured problem-solving under pressure. McKinsey, BCG, and Bain almost never use them, so if MBB is your target, brainteasers are…
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