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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.

Can't Find a Coin?

Age 11 to 14
Challenge Level

How often do you expect the result from a throw to be the same as the result from the previous throw?

How often do you expect to get a run of three identical results?
How often do you expect to get a run of four identical results?
How often do you expect to get a run of five identical results?...