An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Choose any three by three square of dates on a calendar page...
Can you create a Latin Square from multiples of a six digit number?
The diagram on the right shows the fold lines that produce each of the four possible shapes. The shape formed by folding along a line between two opposite corners is shown in blue.
This problem is taken from the UKMT Mathematical Challenges.