Probability - Stage 4

One or Both

Age 14 to 16

ShortChallenge Level Yellow star

Problem 1 was solved by 70% of the pupils. Problem 2 was solved by 60% of them. Can you work out how many pupils took the exam?

In a Box

Age 14 to 16

Challenge Level Yellow star

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?

Chances Are

Age 14 to 16

Challenge Level Yellow star

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

The Better Choice

Age 14 to 16

Challenge Level Yellow star

Here are two games you can play. Which offers the better chance of winning?

Which Spinners?

Age 14 to 18

Challenge Level Yellow star

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

Last One Standing

Age 14 to 16

Challenge Level Yellow star

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

Same Number!

Age 14 to 16

Challenge Level Yellow star

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

Age 14 to 16

Challenge Level Yellow star

Can you work out the probability of winning the Mathsland National Lottery?

Who's the Winner?

Age 14 to 16

Challenge Level Yellow star

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

Probability Short Problems - Age 14-16

Age 14 to 16

A collection of short problems on probability.

Odds and Evens Made Fair

Age 14 to 16

Challenge Level Yellow star

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.