Imagine flipping a coin a number of times. Can you work out the probability you will get a head on at least one of the flips?

Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?

If everyone in your class picked a number from 1 to 225, do you think any two people would pick the same number?

This article explains how tree diagrams are constructed and helps you to understand how they can be used to calculate probabilities.

Which of these games would you play to give yourself the best possible chance of winning a prize?

What is the chance I will have a son who looks like me?

Playing squash involves lots of mathematics. This article explores the mathematics of a squash match and how a knowledge of probability could influence the choices you make.

This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.

Can you work out which spinners were used to generate the frequency charts?

By tossing a coin one of three princes is chosen to be the next King of Randomia. Does each prince have an equal chance of taking the throne?

Predict future weather using the probability that tomorrow is wet given today is wet and the probability that tomorrow is wet given that today is dry.

Is this a fair game? How many ways are there of creating a fair game by adding odd and even numbers?

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?

Four cards are shuffled and placed into two piles of two. Starting with the first pile of cards - turn a card over... You win if all your cards end up in the trays before you run out of cards in. . . .

Simple models which help us to investigate how epidemics grow and die out.