Top 50 Conditional Probability Interview Questions
The most frequently asked Conditional Probability questions across all roles and companies, ranked by real interview frequency. Updated daily.
Compute the probability that two fair six-sided dice add up to 9 by counting favorable outcomes over total outcomes.
Sberbank
Citadel Securities
InsurifyCompute the expected waiting time to see two consecutive heads when flipping a fair coin.
Susquehanna International Group
AKUNA CAPITAL
Tower Research CapitalCompute the probability that the sum of two fair dice is greater than 8 by counting favorable outcomes.
BloombergSSig
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Compute the probability of a multi-flip coin sequence and use conditional probability to explain the result.
NRG Energy
Western Alliance Bank
EquinorDetermine the next-tail probability after ten consecutive heads, distinguishing independence from learning about an unknown coin.
Compute the probability that two balls drawn without replacement are different colors.
AKUNA CAPITALSusquehanna International GroupJJP Morgan ChaseUse worst-case reasoning to find the minimum number of sock draws needed to guarantee a matching pair.
Voloridge Investment ManagementSusquehanna International Group
Weiss Asset ManagementCompute the probability of drawing two blue marbles in sequence without replacement.
Cobblestone EnergyWeiss Asset Management
Point72