You may also like

problem icon

Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

problem icon

Calendar Capers

Choose any three by three square of dates on a calendar page...

problem icon

Latin Numbers

Can you create a Latin Square from multiples of a six digit number?

Flag-tastic

Stage: 2 and 3 Short Challenge Level: Challenge Level:1

A picture of a flag is to be completed by shading two squares that do not share an edge. The diagram shows one way in which this can be done.
 

Flag


How many different possible completed pictures are there (including the one shown)?

 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

 

 

This problem is taken from the UKMT Mathematical Challenges.
View the archive of all weekly problems grouped by curriculum topic