Practice under pressure
Timed arithmetic, sequences, probability, robot games, firm-style assessments, and a 16-game cognitive battery.
Train for the moment the clock starts. Run independent, timed quant interview practice in your browser; use TradeMind on iPhone and Mac for fresh daily sets and progress.
Free web practice · No signup · iPhone and Mac app
TradeMind turns interview preparation into a measurable feedback loop. Use the free web simulators to learn the format, then move to the app for newly generated daily sets, deeper review, and an uninterrupted training record.
Timed arithmetic, sequences, probability, robot games, firm-style assessments, and a 16-game cognitive battery.
Review score, accuracy, per-question timing, and exactly where points were lost — not just a final number.
A newly generated set each calendar day, Daily Goal, streaks, activity history, and readiness tracking.


Start with focused browser drills, then combine them under timed firm-style conditions. Firm simulators use a fixed set so attempts stay comparable; the app generates new training sets each day.
Build calculation speed, then pressure-test it against 80-in-8, Flow, Maven, and SIG-style clocks.
Core skill · daily drillRecognise arithmetic, geometric, alternating, and second-difference patterns before the clock wins.
Pattern recognitionTurn dice, cards, conditional probability, and expected value into fast, reliable decisions.
Probability · EVChoose play or pass from the sign of EV — outcome noise does not change whether the decision was optimal.
Decision qualityWork through 32 interview puzzles on the web, including 10 full solutions. The app library contains 275.
32 web · 10 solutions · 275 in appRun independent CTC-style practice on the web, then explore five firm-style OA modules in the app.
Mixed reasoning · timedPrep Guide — the full pipeline, negative marking, and a five-week study plan.
How to prepare →Independent practice reconstructions based on publicly described formats — never copied questions and never presented as official tests. Start with Optiver 80 in 8, CTC OA, or Flow Traders. TradeMind is not affiliated with any of these firms.
80 typed arithmetic questions in 8 minutes, −1 per wrong answer. Candidate-reported practice benchmark: ~60 net — not an official cutoff.
Candidate-reported practice benchmark: ~60 net — not an official cutoff
50 mixed-reasoning questions in 15 minutes — numerical, spatial, verbal, logic. No negative marking, as candidates report the format.
Published cutoff: Not publicly available
A demanding 75-question practice mode for integer, decimal and fraction arithmetic. Publicly described Flow formats vary by region, role and cycle.
TradeMind practice target: 70 net on this 75Q / 8-minute configuration — a training setting, not a firm cutoff
40 five-choice questions in 6 minutes, −2 per wrong answer. Candidate-reported practice benchmark: ~34 correct — not an official cutoff.
Candidate-reported practice benchmark: ~34 correct on a reported 40Q / 6-minute format — not an official cutoff
70 questions in 8 minutes mixing typed difference-of-squares tricks with MCQ decimals and ugly fractions. TradeMind practice target: 55 net — not a firm cutoff.
TradeMind practice target: 55 net on this 70Q / 8-minute configuration — a training setting, not a firm cutoff
80 typed arithmetic questions in 8 minutes, −1 per wrong answer — the first OA screen as publicly reported. A separate sequences section follows.
TradeMind practice target: 60 net for this TradeMind practice set — a training setting, not a firm cutoff
Format maps for funnels that are not a published speed-math test.
IMC Trading · Jane Street · Citadel
format guides · no published speed test
CTC plus IMC pattern OA, SIG tracks, CCI games, and Wincent — a fresh set every day.
in the app · a fresh set every calendar day
Optiver · CTC · Flow Traders · Maven Securities · SIG · Akuna Capital · IMC Trading · Jane Street · Citadel