Probability

  • Squash
    problem

    Squash

    Age
    16 to 18
    Challenge level
    3 out of 3
    If the score is 8-8 do I have more chance of winning if the winner is the first to reach 9 points or the first to reach 10 points?
  • Scissors, Paper, Rock
    game

    Scissors, Paper, Rock

    Age
    5 to 7
    Challenge level
    1 out of 3

    Play this well-known game against the computer where each player is equally likely to choose scissors, paper or rock. Why not try the variations too?

  • Probable Words
    problem

    Probable Words

    Age
    5 to 7
    Challenge level
    1 out of 3

    If you asked your mum/dad/friend to take you to the park today, what sort of response might you get?

  • All Change
    problem

    All Change

    Age
    5 to 7
    Challenge level
    1 out of 3

    There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?

  • Two and One
    problem

    Two and One

    Age
    5 to 7
    Challenge level
    3 out of 3

    Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?

  • problem

    In the Playground

    Age
    5 to 11
    Challenge level
    2 out of 3

    What can you say about the child who will be first on the playground tomorrow morning at breaktime in your school?

  • Tricky Track
    problem

    Tricky Track

    Age
    7 to 11
    Challenge level
    1 out of 3

    In this game you throw two dice and find their total, then move the appropriate counter to the right. Which counter reaches the purple box first?

  • You Never Get a Six
    problem

    You Never Get a Six

    Age
    7 to 11
    Challenge level
    1 out of 3

    Charlie thinks that a six comes up less often than the other numbers on the dice. Have a look at the results of the test his class did to see if he was right.

  • Three Spinners
    problem

    Three Spinners

    Age
    7 to 11
    Challenge level
    1 out of 3

    These red, yellow and blue spinners were each spun 45 times in total. Can you work out which numbers are on each spinner?

  • Probably...
    problem

    Probably...

    Age
    7 to 11
    Challenge level
    1 out of 3

    You'll need to work in a group for this problem. The idea is to decide, as a group, whether you agree or disagree with each statement.