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Nine or Ten?

Is a score of 9 more likely than a score of 10 when you roll three dice?

Racing Odds

In a race the odds are: 2 to 1 against the rhinoceros winning and 3 to 2 against the hippopotamus winning. What are the odds against the elephant winning if the race is fair?

Stop or Dare

All you need for this game is a pack of cards. While you play the game, think about strategies that will increase your chances of winning.

Non-transitive Dice

Age 11 to 14
Challenge Level
If Charlie picks the green die, what should Alison do?
If Charlie picks the red die, what should Alison do?
If Charlie picks the blue die, what should Alison do?