This article explains how tree diagrams are constructed and helps
you to understand how they can be used to calculate probabilities.
What is the chance I will have a son who looks like me?
When two closely matched teams play each other, what is the most likely result?
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?
A problem about genetics and the transmission of disease.
If everyone in your class picked a number from 1 to 225, do you
think any two people would pick the same number?
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.
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?
Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?
Use cunning to work out a strategy to win this game.
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
This interactivity invites you to make conjectures and explore
probabilities of outcomes related to two independent events.
Which of these games would you play to give yourself the best possible chance of winning a prize?
Can you work out which spinners were used to generate the frequency charts?
Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?
Is this a fair game? How many ways are there of creating a fair
game by adding odd and even numbers?
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.
Simple models which help us to investigate how epidemics grow and die out.
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. . . .