problem
Substitution transposed
Substitution and Transposition all in one! How fiendish can these codes get?
Is it the fastest swimmer, the fastest runner or the fastest cyclist who wins the Olympic Triathlon?
Can you make sense of information about trees in order to maximise the profits of a forestry company?
Six samples were taken from two distributions but they got muddled up. Can you work out which list is which?
Where do people fly to from London? What is good and bad about these representations?