QAM Labs
Train the instincts quant interviews actually test.
Timed mental math, probability, trading, and reasoning drills — with anonymous leaderboards and live percentile rankings so you know exactly where you stand.
5 free games, 17 more with Premier
Play any free game as a guest — sign up to save your scores. Premier unlocks every trading and reasoning game, the combined Quant Gauntlet, and two combo challenges.
60 seconds, four operators, zero calculator.
Mental Math Sprint
Add, subtract, multiply, and divide against the clock. Problems get harder the longer your streak runs.
Coins, dice, and cards — fast.
Probability Blitz
Rapid-fire probability questions: coin flip combinations, dice sums, card draws. Answer within tolerance before time runs out.
Take it, or pass?
Expected Value Challenge
You're offered a bet with a win amount, a loss amount, and a probability. Decide fast whether the expected value says take it.
What comes next?
Sequence Recognition
Arithmetic, geometric, square, and Fibonacci-style sequences. Spot the rule and enter the next number before the streak breaks.
How many digits can you hold?
Number Memory
A digit string flashes on screen, then disappears. Type it back. Each round adds a digit — one mistake ends the run.
See all 23 games →Which interview are you prepping for?
Investment banking, consulting, quant research, sales & trading, quant trading, market making, hedge funds, private equity, corporate finance, data science & ML — pick a track and go straight to the games that matter for it.
Anonymous leaderboards, real rankings
Every score is compared live against everyone else who's played, under a random handle like otter-falcon-4821 — your dashboard shows a percentile for each game, like “Mental Math — 92nd percentile.”