![Who's the winner?](/sites/default/files/styles/medium/public/thumbnails/content-id-7478-icon.jpg?itok=XoQodd2o)
problem
Who's the winner?
When two closely matched teams play each other, what is the most likely result?
![Chances are](/sites/default/files/styles/medium/public/thumbnails/content-03-06-six3-icon.gif?itok=2eqi9Gd4)
problem
Chances are
Which of these games would you play to give yourself the best possible chance of winning a prize?
![The Better Choice](/sites/default/files/styles/medium/public/thumbnails/content-id-4334-icon.png?itok=WZL169aY)
problem
The Better Choice
Here are two games you can play. Which offers the better chance of winning?
![Which spinners?](/sites/default/files/styles/medium/public/thumbnails/content-id-6123-icon.jpg?itok=orBOhseL)
![Last one standing](/sites/default/files/styles/medium/public/thumbnails/content-id-7220-icon.jpg?itok=EwRXPnOH)
problem
Last one standing
Imagine a room full of people who keep flipping coins until they get a tail. Will anyone get six heads in a row?
![Chances Are Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7997-icon.gif?itok=Iwn_hqSX)
![Odds and Evens made fair](/sites/default/files/styles/medium/public/thumbnails/content-id-9538-icon.png?itok=H2-05nUP)
problem
Odds and Evens made fair
In this follow-up to the problem Odds and Evens, we invite you to analyse a probability situation in order to find the general solution for a fair game.
![In a box](/sites/default/files/styles/medium/public/thumbnails/content-03-06-six2-icon.gif?itok=QusJOsDo)
problem
In a box
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?
![Same Number!](/sites/default/files/styles/medium/public/thumbnails/content-id-7221-icon.png?itok=qzwUKYL2)
problem
Same Number!
If everyone in your class picked a number from 1 to 225, do you think any two people would pick the same number?
![Mathsland National Lottery](/sites/default/files/styles/medium/public/thumbnails/content-id-7238-icon.png?itok=YHeN5V9q)
problem
Mathsland National Lottery
Can you work out the probability of winning the Mathsland National Lottery?
Image
![Probability - Stage 4 STEM footer Probability - Stage 4 STEM footer](/sites/default/files/styles/large/public/thumbnails/content-id-13481-STEMlogo.png?itok=o3AZQzTz)
You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.