Live Problems - Stage 4 & 5

Each time you visit the NRICH site there will be some activities which are 'live'. That means we are inviting you to send us your solutions and we will publish a selection of them, along with your name and school. If you'd like to read more about what we're looking for, read this short article.

This set of tasks will stop being live on Monday 25 March. 

Sortedlive

Age 14 to 18 Challenge Level:

How can you quickly sort a suit of cards in order from Ace to King?

Tree Topslive

Age 14 to 16 Challenge Level:

Can you make sense of information about trees in order to maximise the profits of a forestry company?