Theoretical probability

problem
Favourite

Stats statements

Age

16 to 18

Challenge level

Are these statistical statements sometimes, always or never true? Or it is impossible to say?
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Misunderstanding randomness

Age

11 to 14

Challenge level

Which of these ideas about randomness are actually correct?
problem
Favourite

Interactive spinners

Age

11 to 14

Challenge level

This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
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Can't find a coin?

Age

11 to 14

Challenge level

Can you generate a set of random results? Can you fool the random simulator?
problem
Favourite

It's a tie

Age

7 to 11

Challenge level

Kaia is sure that her father has worn a particular tie twice a week in at least five of the last ten weeks, but her father disagrees. Who do you think is right?
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Taking chances

Age

11 to 14

Challenge level

This article, for students and teachers, is mainly about probability, the mathematical way of looking at random chance and is a shorter version of Taking Chances Extended.
problem

Bet you a million

Age

14 to 16

Challenge level

Heads or Tails - the prize doubles until you win it. How much would you pay to play?
problem
Favourite

The birthday bet

Age

14 to 16

Challenge level

The next ten people coming into a store will be asked their birthday. If the prize is £20, would you bet £1 that two of these ten people will have the same birthday ?
problem
Favourite

The better choice

Age

14 to 16

Challenge level

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

Cosy corner

Age

11 to 14

Challenge level

Six balls are shaken. You win if at least one red ball ends in a corner. What is the probability of winning?