Can you describe what happens in this film?
You have been given nine weights, one of which is slightly heavier
than the rest. Can you work out which weight is heavier in just two
weighings of the balance?
Here is a solitaire type environment for you to experiment with. Which targets can you reach?
Using the interactivity, can you make a regular hexagon from yellow
triangles the same size as a regular hexagon made from green
If the yellow equilateral triangle is taken as the unit for area,
what size is the hole ?
Which of these roads will satisfy a Munchkin builder?
There is a unique way of producing each total - take a look here.
Go to last month's problems to see more solutions.
If you think that mathematical proof is really clearcut and
universal then you should read this article.
Solve the equations to identify the clue numbers in this Sudoku problem.