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 your school's name. If you'd like to know more about what we're looking for, read this short article.
The last day for submitting solutions to these live problems is Monday 27 November.
problem
Negative powers
Age
14 to 18
Challenge level
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?