Probability - Stage 4


This is part of ourĀ Secondary Curriculum collection of favourite rich tasks arranged by topic.

Which Spinners?live

Stage: 4 and 5 Challenge Level: Challenge Level:1

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

Last One Standing

Stage: 4 Challenge Level: Challenge Level:1

Imagine a room full of people who keep flipping coins until they get a tail. Will anyone get six heads in a row?

The Better Bet

Stage: 4 Challenge Level: Challenge Level:1

Here are two games you have to pay to play. Which is the better bet?

Same Number!

Stage: 4 Challenge Level: Challenge Level:1

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

Stage: 4 Challenge Level: Challenge Level:1

Can you work out the probability of winning the Mathsland National Lottery? Try our simulator to test out your ideas.

Who's the Winner?

Stage: 4 Challenge Level: Challenge Level:1

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

Chances Are

Stage: 4 Challenge Level: Challenge Level:1

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

Odds and Evens Made Fair

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

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

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

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?

Probability Stage 4 - Short Problems

Stage: 4

A collection of short Stage 4 problems on probability.