Probability

  • Chance Combinations
    problem

    Chance Combinations

    Age
    11 to 14
    Challenge level
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    Can you design a bingo board that gives you the best chance of winning?
  • Racing odds
    problem

    Racing Odds

    Age
    11 to 14
    Challenge level
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    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?
  • 396
    problem

    396

    Age
    14 to 16
    Challenge level
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    The four digits 5, 6, 7 and 8 are put at random in the spaces of the number : 3 _ 1 _ 4 _ 0 _ 9 2 Calculate the probability that the answer will be a multiple of 396.
  • Tying the Rope
    problem

    Tying the Rope

    Age
    14 to 16
    Challenge level
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    What is the probability that two pieces of rope are tied together, when Pat ties two loose ends together?
  • What's the point of squash?
    problem

    What's the Point of Squash?

    Age
    14 to 18
    Challenge level
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    Under which circumstances would you choose to play to 10 points in a game of squash which is currently tied at 8-all?
  • Genetics
    problem

    Genetics

    Age
    14 to 16
    Challenge level
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    A problem about genetics and the transmission of disease.
  • How Risky \is my diet?
    problem

    How Risky Is My Diet?

    Age
    11 to 16
    Challenge level
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    Newspapers said that eating a bacon sandwich every day raises the risk of bowel cancer by 20%. Should you be concerned?
  • Statins and Risk
    problem

    Statins and Risk

    Age
    14 to 16
    Challenge level
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    "Statins cut the risks of heart attacks and strokes by 40%"
    Should the Professor take statins? Can you help him decide?