Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?
Can you guarantee that, for any three numbers you choose, the product of their differences will always be an even number?
How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?
Experiment with the interactivity of "rolling" regular polygons, and explore how the different positions of the dot affects its vertical and horizontal movement at each stage.
Start with two numbers and generate a sequence where the next number is the mean of the last two numbers...
Imagine you were given the chance to win some money... and imagine you had nothing to lose...
A cinema has 100 seats. Is it possible to fill every seat and take exactly £100?
Collect as many diamonds as you can by drawing three straight lines.
