Simple additions can lead to intriguing results...
Watch the video to see how Charlie works out the sum. Can you adapt his method?
Watch the video to see how to add together an arithmetic sequence of numbers efficiently.
Can you fit polynomials through these points?
By proving these particular identities, prove the existence of general cases.
These students explained the cleverness of their code-breaking journeys very clearly, and should give many insights to all would-be code breakers.
Go to last month's problems to see more solutions.
Can one example help us to perceive the generality?
Third in our series of problems on population dynamics for advanced students.
Play countdown with matrices