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BCG Interview Questions

The questions to prepare for BCG interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~48 min
2
Coding4 questions · ~37 min
SQL Missing Values CountEasy
Practice
Recently asked

Count absent or None values in a selected column using a single pass through row records.

pandasdata cleaningData AnalysisBBCG
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3
System Design4 questions · ~37 min
Design an LLM Serving PlatformHard
Recently asked

Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.

Cold StartFeature StoreModel ServingBBCG
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4
Model Evaluation3 questions · ~28 min
Monitor Production Model PerformanceHard
Recently asked

Approach for monitoring a model in production and spotting drift, threshold issues, and calibration loss.

PrecisionAccuracyRecallBBCG
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5
Strategy4 questions · ~37 min
Tell Me About YourselfEasy

Tests your ability to deliver a clear, relevant introduction tailored to the role at Aqr.

Competitive AnalysisGo-to-MarketBBCG
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6
Metrics3 questions · ~28 min
Define Success for a ProjectEasy

Define what success means for a project using clear KPIs, a north star, and supporting metrics.

KPIsSuccess CriteriaDiagnosisBBCG
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7
More topics29 questions · ~270 min
Approach to Project Risk TrackingEasy

Explain how you would identify, track, escalate, and communicate project risks across stakeholders.

Success CriteriaRoadmappingRisk AssessmentBBCG
Type I vs Type II ErrorsMedium
Recently asked

Assesses statistical understanding and how you manage tradeoffs in hypothesis testing.

mitigationBBCG
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