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Quant interview prep — markets, probability, and vol.

Maths & Sequences

Math Dojo
20+ mental-math drills under one roof — pick a trick, drill it till it's automatic.
Hub
Sequence Game
Five sequences per round. Spot the next term faster than the clock.
Pattern
35 in 3
35 questions, 3 minutes. Speed beats precision.
Math
80 in 8
10 per minute for 8 minutes straight. Pacing is the whole game.
Math

Puzzles & Brain Teasers

Quant Sprint
120 seconds, 1 probability question every 6–8 seconds. No partial credit.
Probability
Market Making
Quote a bid and ask — the NPC takes the side that hurts you most.
Estimation
Arbitrage Puzzle
Three trades; one is riskless free money. Find it before the clock dies.
Reasoning
Brain Teasers
Lateral-thinking riddles — the kind that show up in the second-round “tell me how you think” interviews.
Riddle

Reaction & Spatial

Reaction Time
Tap the right colour the moment it appears. Pure reflex; no thinking allowed.
Speed
Memory
Spatial recall + sequential + change-detection — three working-memory tasks back-to-back.
Memory

Discover

Tutorials
88 worked examples — one quant method each, practice problems with step-by-step hints, and a reflection prompt.
Method
Distribution Explorer
Interactive sliders for 8 probability distributions — adjust parameters and watch the PDF/CDF reshape live.
Interactive
Know Your Mind
Seven self-tests: Big Five, CRT, Insights archetype, working memory, locus of control, more.
Self-test
Independent · Legal