Practice
Quant interview prep
2,130 questions across 9 topics. Questions come with a worked solution or the book page where it is solved, hints where available, and links to the lessons that teach the idea behind them.
Probability
928questions
448 easy · 356 medium · 124 hard
Combinatorics · Expected Value · Conditional Probability · Events · Continuous Random Variables
Builds on Conditional Probability, Total Probability, and Bayes' Rule, Sample Spaces, Events, and the Probability Axioms, Expectation, Mean, and Variance
Brainteaser/Logic
355questions
192 easy · 112 medium · 51 hard
Logic · Games & Strategy · Arithmetic & Number Puzzles · Geometry Puzzles · Combinatorics
Builds on Sample Spaces, Events, and the Probability Axioms, Counting and Combinatorics, Conditional Probability, Total Probability, and Bayes' Rule
Finance/Derivatives
311questions
138 easy · 126 medium · 47 hard
Options Pricing · Greeks · Fixed Income · Black-Scholes · No-Arbitrage
Builds on Option Mechanics: Calls, Puts, Moneyness, Intrinsic Value, and Exchange vs. OTC Markets, Option Trading Strategies: Spreads, Combinations, and Payoff Engineering, Derivation — From Binomial Trees to Black-Scholes in the Continuous Limit
Behavioural/General
181questions
179 easy · 2 medium
About You · Markets & Economy · Job Awareness · Financial Management · Thinking & Estimation
Builds on Conditional Probability, Total Probability, and Bayes' Rule, Bond Prices, Discount Factors, and the Law of One Price, Sample Spaces, Events, and the Probability Axioms
Pure Math
121questions
65 easy · 43 medium · 13 hard
Calculus · Linear Algebra · Algebra & Number Theory · Combinatorics · Series & Limits
Builds on The Derivative as a Limit: Rates of Change and the Derivative Function, The Chain Rule, Eigenvalues and Eigenvectors: Ax = λx
Statistics
101questions
69 easy · 26 medium · 6 hard
Estimation · Linear Regression · Distributions · Continuous Random Variables · Covariance & Correlation
Builds on Populations, Samples, and Sampling Distributions, Covariance and Correlation, Maximum Likelihood Estimation: Score and Log-Likelihood
Programming/Algorithms
69questions
49 easy · 20 medium
C++ · Algorithms · Numerical Methods · Sorting & Searching · Data Structures
Builds on Algorithms, Growth Rates, and Asymptotic Notation, Quicksort and Randomized Quicksort, Root-Finding and Numerical Integration
Stochastic Calculus
57questions
23 easy · 22 medium · 12 hard
Brownian Motion · Ito Calculus · SDEs · Change of Measure
Builds on Itô's Formula, The Four Faces of Brownian Motion, The Chain Rule
ML/Data
7questions
6 easy · 1 hard
Data Wrangling · Machine Learning
Builds on Conditional Probability, Total Probability, and Bayes' Rule, Sample Spaces, Events, and the Probability Axioms, Derivation — From Binomial Trees to Black-Scholes in the Continuous Limit
Lessons that come up most
- Conditional Probability, Total Probability, and Bayes' Rule
- Sample Spaces, Events, and the Probability Axioms
- Expectation, Mean, and Variance
- Counting and Combinatorics
- Conditional Expectation and Variance Revisited
- Worked Examples — Probability Trees, Monty Hall, and Bayesian Updating
- Series and the Geometric Series: Partial Sums and Convergence
- Optimisation Problems
- Option Mechanics: Calls, Puts, Moneyness, Intrinsic Value, and Exchange vs. OTC Markets
- Option Trading Strategies: Spreads, Combinations, and Payoff Engineering
- Derivation — From Binomial Trees to Black-Scholes in the Continuous Limit
- Market Model and Risk-Neutral Valuation