Equally likely outcomes
problem
Favourite
Which spinners?
Age
14 to 18
Challenge level
Can you work out which spinners were used to generate the frequency charts?
problem
Dicey Dice
Age
16 to 18
Challenge level
Invent a set of three dice where each one is better than one of the others?
problem
Misunderstanding Randomness
Age
11 to 14
Challenge level
Which of these ideas about randomness are actually correct?
problem
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
Connect Three
Age
11 to 16
Challenge level
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
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?
problem
Favourite
Two's company
Age
11 to 14
Challenge level
Seven balls are shaken. You win if the two blue balls end up touching. What is the probability of winning?
problem
Favourite
Flippin' discs
Age
11 to 14
Challenge level
Discs are flipped in the air. You win if all the faces show the same colour. What is the probability of winning?
problem
How Many Balls?
Age
16 to 18
Challenge level
A bag contains red and blue balls. You are told the probabilities
of drawing certain combinations of balls. Find how many red and how
many blue balls there are in the bag.