« Home | Why Should I Learn Math? » | Roboclaw Sunday! » | A del.icio.us idea ... » | HOMEWORK » | The Scribe: " Need to catch up?, then read my post... » | The Last Three Scribes .... » | Box Up Sunday! » | Seek and ye shall find ... » | Sunday Knight » | Last Minute Probability Links » 

Sunday, April 09, 2006 

Four Colour Sunday!


You may have heard that any map can be coloured with four colours in such a way that neighbouring countries receive different colours. That it can be always done is one thing. How to do it is another. Are you ready to start colouring?

(Thanks again to Think Again!)




Français/French Deutsch/German Italiano/Italian Português/Portuguese Español/Spanish 日本語/Japanese 한국어/Korean 中文(简体)/Chinese Simplified Nederlands/Dutch

Post a Comment