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Top 50 probability Interview Questions

The most frequently asked probability questions across all roles and companies, ranked by real interview frequency. Updated daily.

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1
CodingStart here. 12 questions · ~142 min
Dice Win/Tie OutcomesMedium
Practice
Recently asked

Count P wins, Q wins, and ties across all dice outcomes using sorting and binary search.

probabilityCloud Big Data Technologies
Dice Scoring ProbabilityEasy
Practice
Recently asked

Compute the probability of rolling exactly k twos across n dice using dynamic programming.

probabilityGoldman Sachs
3 Ants and Triangle ProblemEasy
Practice
Recently asked

Calculate the probability that three independently directed ants collide while walking around a triangular Pine Labs device.

logicprobabilityPine Labs
Simulate Dice Sum ProbabilityEasy
Practice

Problem Write a Python function that simulates rolling two fair six-sided dice for a given number of trials and returns the empirical probability that the...

probabilitysimulationpythonKlaviyo
Naive Bayes From ScratchMedium
Practice

Implement a smoothed categorical Naive Bayes classifier for predicting Moloco ad-ranking labels.

ClassificationprobabilityMoloco
Weighted Random Fruit PickerMedium
Practice

Return the fruits that can be selected by filtering an aligned weight array for positive probabilities.

probabilityArraysArray ManipulationSift
Probability of Coin HeadsMedium
Practice

Compute the probability that a target coin is heads given observed outcomes and an exact total number of heads using dynamic programming.

logicprobabilityStackadapt
Probability Coin QuestionMedium
Practice

Use dynamic programming to calculate the probability of getting at least k heads from independent coin flips.

combinatoricsDynamic ProgrammingprobabilityHHudson River Trading
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2
Statistics & Probability34 questions · ~401 min
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3
More topics4 questions · ~47 min
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