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There are 30 NRICH Mathematical resources connected to Probability, you may find related items under Probability.
Broad Topics > Probability > ProbabilityThere 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?
What statements can you make about the car that passes the school gates at 11am on Monday? How will you come up with statements and test your ideas?
What can you say about the child who will be first on the playground tomorrow morning at breaktime in your school?
The class were playing a maths game using interlocking cubes. Can you help them record what happened?
Kaia is sure that her father has worn a particular tie twice a week in at least five of the last ten weeks, but her father disagrees. Who do you think is right?
Have a go at this game which involves throwing two dice and adding their totals. Where should you place your counters to be more likely to win?
Anna and Becky put one purple cube and two yellow cubes into a bag to play a game. Is the game fair? Explain your answer.
Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?
A simple spinner that is equally likely to land on Red or Black. Useful if tossing a coin, dropping it, and rummaging about on the floor have lost their appeal. Needs a modern browser; if IE then at least version 9.
Fancy a game of cricket? Here is a mathematical version you can play indoors without breaking any windows.
Uncertain about the likelihood of unexpected events? You are not alone!
The beginnings of understanding probability begin much earlier than you might think...
If you asked your mum/dad/friend to take you to the park today, what sort of response might you get?
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.
Find out about the lottery that is played in a far-away land. What is the chance of winning?
In the time before the mathematical idea of randomness was discovered, people thought that everything that happened was part of the will of supernatural beings. So have things changed?
These red, yellow and blue spinners were each spun 45 times in total. Can you work out which numbers are on each spinner?
This article, written by Nicky Goulder and Samantha Lodge, reveals how maths and marimbas can go hand-in-hand! Why not try out some of the musical maths activities in your own classroom?
Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?
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.
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?
Can you beat Piggy in this simple dice game? Can you figure out Piggy's strategy, and is there a better one?
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?
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.
A maths-based Football World Cup simulation for teachers and students to use.
When you throw two regular, six-faced dice you have more chance of getting one particular result than any other. What result would that be? Why is this?
Mrs. Smith had emptied packets of chocolate-covered mice, plastic frogs and gummi-worms into a cauldron for treats. What treat is Trixie most likely to pick out?
Bipin is in a game show and he has picked a red ball out of 10 balls. He wins a large sum of money, but can you use the information to decided what he should do next?