Stage: 2 Challenge Level: 
Can you put the numbers from $1$ to $15$ on the circles so that no consecutive numbers lie anywhere along a continuous straight line?
Full screen version
This text is usually replaced by the Flash movie.
Visualising. Combinations. Investigations. Addition & subtraction. Compound transformations. Comparing and Ordering numbers. Games. Practical Activity. Working systematically. Interactivities.
Published January 2007.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk
