Challenge Level

Take any prime number greater than 3 , square it and subtract one. Working on the building blocks will help you to explain what is special about your results.

Challenge Level

If a sum invested gains 10% each year how long before it has doubled its value?

Challenge Level

In this short problem, try to find the location of the roots of some unusual functions by finding where they change sign.

Challenge Level

What is the same and what is different about these circle questions? What connections can you make?

Challenge Level

Can you find the area of the central part of this shape? Can you do it in more than one way?