When you visit the NRICH site you may find some activities which are 'live'. This means we are inviting students to send us solutions, and we will publish a selection of them, along with each student's name and their school, a few weeks later. If you'd like to know more about what we're looking for, read this short article.
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?