This tool allows you to create custom-specified random numbers, such as the total on three dice.

A geographical survey: answer the tiny questionnaire and then analyse all the collected responses...

How was the data for this problem compiled? A guided tour through the process.

Where do people fly to from London? What is good and bad about these representations?

Can you make a set of random data which will fool the computer?

Use your skill and judgement to match the sets of random data.

In how many ways can you arrange three dice side by side on a surface so that the sum of the numbers on each of the four faces (top, bottom, front and back) is equal?

Your partner chooses two beads and places them side by side behind a screen. What is the minimum number of guesses you would need to be sure of guessing the two beads and their positions?