### There are 19 results

Broad Topics >

Probability > Tree diagrams

##### Age 11 to 14 Challenge Level:

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?

##### Age 14 to 18 Challenge Level:

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

##### Age 11 to 14 Challenge Level:

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

##### Age 14 to 16 Challenge Level:

When two closely matched teams play each other, what is the most likely result?

##### Age 11 to 16

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

##### Age 14 to 16 Challenge Level:

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. . . .

##### Age 14 to 16 Short Challenge Level:

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

##### Age 14 to 16 Short Challenge Level:

How can this prisoner escape?

##### Age 14 to 16 Short Challenge Level:

These strange dice are rolled. What is the probability that the sum obtained is an odd number?

##### Age 14 to 16 Challenge Level:

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

##### Age 11 to 14 Challenge Level:

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

##### Age 14 to 16 Challenge Level:

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

##### Age 14 to 16 Challenge Level:

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?

##### Age 14 to 16 Short Challenge Level:

What percentage of students who graduate have never been to France?

##### Age 11 to 14 Challenge Level:

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

##### Age 14 to 18 Challenge Level:

How can we find out answers to questions like this if people often lie?

##### Age 14 to 16 Challenge Level:

A problem about genetics and the transmission of disease.

##### Age 11 to 14 Challenge Level:

Your partner chooses two beads and places them side by side behind a screen. What is the minimum number of guesses you would need to be sure of guessing the two beads and their positions?

##### Age 11 to 16 Challenge Level:

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