Tag: interview-career
Concepts
- The ABRACADABRA Problem
- Adaptive Versus Pre-Committed Weighing Strategies
- Should You Add to a Losing Position
- AM-GM as a Puzzle Tool
- Anchor Numbers Worth Memorising
- Spotting an Arb Across Two Quoted Markets
- The Arcsine Law: Who Leads a Coin-Flip Race
- They Ask for Size on Your Market
- Asset Managers, Pensions and the Long-Only World
- The Quick At-the-Money Option Price Formula
- Why Averaging Averages Gives the Wrong Answer
- Bank Trading Desks and the Sell Side
- Thinking in a Different Base
- Bertrand's Chord Paradox
- Bertrand's Box Paradox
- Why the Naive Shuffle Is Biased
- Buffon's Needle
- Building a Portable Track Record
- How Capital Is Allocated to Trading Teams
- Optimal Card Guessing When You Count What Is Gone
- Catalan Numbers and Balanced Structures
- Cauchy-Schwarz as a Puzzle Tool
- Cheryl's Birthday and Iterated Knowledge
- The Chessboard Coin-Flip Prisoner Puzzle
- The Chevalier de Mere Problem
- Asking Clarifying Questions Well
- The Substitution That Collapses the Algebra
- Collision Bounds Beyond the Birthday Problem
- Comparing Huge Powers Without a Calculator
- Does This Recursion Converge
- Counting Lattice Paths
- Counting Poker Hands
- Craps: Working Out the House Edge
- Desk Quant vs Central Quant
- Detecting a Biased Coin From Few Flips
- Detecting Cycles in an Iterated Sequence
- The Dice Game Pig and Optimal Stopping
- Units and Dimensional Analysis
- Cut-and-Rearrange Dissection Puzzles
- Why the Doubling Betting System Fails
- Symmetry Shortcuts for Draws Without Replacement
- How Errors Compound Down an Estimation Chain
- Estimating a Company's Market Cap From Scratch
- Estimating an Exchange's Daily Traded Volume
- Estimating Total Options Notional Traded
- Estimating a Prop Firm's Annual Revenue
- Proving a Greedy Rule Optimal by Exchange
- Expected Cards Until the First Ace
- Expected Distance Between Two Random Points
- How Long the Gambler's Ruin Game Lasts
- Expected Longest Streak of Heads
- Expected Maximum of Several Dice
- Expected Maximum of n Uniform Draws
- Explaining a Model to a Non-Technical Audience
- Explaining Your Own Research Clearly
- Explore Versus Exploit
- Cutting a Cake Fairly
- Fermat's Little Theorem in Puzzles
- Where Fibonacci Numbers Show Up
- Financial Anchor Numbers Worth Memorising
- Finding the Median With Few Comparisons
- The First-Price Auction Roleplay
- Fixed Points of Iterated Maps
- The Frobenius Coin Problem
- Functional Equations
- Management Fees, Performance Fees and Hurdles
- GCD and LCM Puzzles
- Quoting a Range Instead of a Single Number
- Handling Drawdowns, Pressure and Burnout
- Handling Questions You Cannot Answer
- The Hardest Logic Puzzle Ever
- The Hat-Check Problem and Expected Fixed Points
- Hedging Immediately After You Get Hit
- Why HHH Takes Longer to Appear Than HHT
- Hitting a Risk Limit Mid-Trade
- Hypergeometric Draws From a Deck
- The Indicator-Variable Trick
- The Inspection Paradox and the Waiting-for-a-Bus Trap
- Internships and Return Offers
- Scheduling to Fit the Most Jobs
- Proving a Number Is Irrational
- Knights, Knaves and Truth-Tellers
- Finding the Last Digit of a Huge Power
- Liar's Poker and Liar's Dice
- Solving Logic-Grid Puzzles Systematically
- Electronic Market-Making Firms
- Mastermind: Deduction From Feedback
- Maximum Regions From n Straight Cuts
- Moving Between Desks, Strategies and Firms
- The Muddy Children Puzzle
- The Mutilated Chessboard
- Negotiating a Quant Offer
- Nested Radicals and Infinite Fractions
- Non-Competes, Garden Leave and Moving Firms
- Non-Transitive Dice
- Counting Divisors From a Prime Factorisation
- Finding the Odd Ball Without Knowing If It Is Heavy or Light
- The Odds Algorithm for Stopping on the Last Success
- One Question, Two Guards, One Door
- Orders of Magnitude and Rounding Discipline
- Packing Circles and Squares
- Encoding Information With Parity in Hat Puzzles
- Penney's Game and Non-Transitive Patterns
- PhD, Masters or Straight to Industry
- Estimating Physical Quantities From Scale
- The Pod and Multi-Manager Model
- The Poisoned Wine Bottles and Binary Encoding
- Polya's Urn and Self-Reinforcing Draws
- The Portfolio Manager
- Prisoners in a Line Guessing Hat Colours
- Probabilities of the Standard Poker Hands
- The Problem of Points: Splitting an Interrupted Bet
- Quant Competitions and Public Leaderboards
- Writing a Quant CV
- The Quant Developer
- The Quant Researcher
- The Quant Trader
- What to Ask Your Interviewer
- Quoting When the Other Side Has Seen Something
- The Chance That Random Points Fit in a Semicircle
- First-Return Probabilities of a Random Walk
- The Rare-Disease Test Puzzle
- Reacting to a Sudden News Shock
- Reading a Run of One-Sided Flow
- Reading Quant Papers Effectively
- Replicating a Published Strategy
- How Many Riffle Shuffles Randomise a Deck
- Risk-Appetite and Decision-Making Questions
- The Risk Quant
- Square-Root-of-Time Scaling in Your Head
- Rope-Burning and Measuring Time
- The Rule of 72
- Searching a Unimodal Function
- Finding the Second-Best Player in Fewest Matches
- Second-Price Auctions and Truthful Bidding
- Self-Referential Quiz Puzzles
- Designing a Self-Study Curriculum
- Shortest-Job-First and Average Waiting Time
- Sicherman Dice
- Simpson's Paradox as an Interview Trap
- Simulating a Die With a Coin and Back Again
- Solving Linear Recurrences With Characteristic Roots
- The Spider and the Fly: Unfolding a Box
- The St Petersburg Paradox
- Stable Matching and Gale-Shapley
- Coordination Games and the Stag Hunt
- The STAR Method for Behavioural Answers
- Stating Assumptions and Calibrated Confidence
- Staying Employable as Markets Change
- Stirling's Approximation in Puzzles
- Structuring an Answer Out Loud
- The Sum-and-Product Puzzle
- Summing an Infinite Series in Your Head
- Superdays and Final-Round Formats
- Systematic vs Discretionary Investing
- Take-Home Data Challenges
- Taking a Hint and Updating Mid-Question
- Talking About Losses and Mistakes
- Telescoping Sums and Products
- Cross-Checking Top-Down Against Bottom-Up
- The Top-to-Random Shuffle
- High, Mid and Low Frequency Shops
- The Tuesday Boy Variant
- Twenty Questions and the Entropy Bound
- Two Decks Turned Over Together
- The Two Generals Problem
- Unwinding a Position Before the Close
- Vieta's Formulas: Answering Without Solving
- Answering Why Trading and Why This Firm