Brainteasers
Probability, expected value, logic and maths puzzles of the kind trading interviews ask. Pick an answer, use hints if you need them, and read the worked solution.
- Switch or StayEasyFree
- A Shared BirthdayEasyFree
- Lucky SevenEasyFree
- A Six in Four RollsEasyFree
- Two Cards, Same ColourEasyFree
- Which Coin Is It?EasyFree
- One Die, Fair PriceEasyFree
- Price a CardEasyFree
- A Product of DiceEasyFree
- The Shorter PieceEasyFree
- The Heavy BallEasyFree
- Two FusesEasyFree
- Three SwitchesEasyFree
- Socks in the DarkEasyFree
- Everyone Shakes HandsEasyFree
- Quarter Past ThreeEasyFree
- One to a HundredEasyFree
- Root Two ThousandEasyFree
- Double Your MoneyEasyFree
- Seconds in a YearEasyFree
- Forty-Seven Times Fifty-ThreeEasyFree