Prisoner Problem

Solids of Constant Width

Most UK coins are circular, but two coins are sevensided, the 50 pence coin shown above and the smaller 20 pence ...

 

The Fold and Cut Problem

Imagine that you have a sheet of paper in front of you, and that you draw a polygon on the paper. ...

Purkinje Effect

Jan Evangelista Purkinje, 17871869, was a professor of physiology at the University of Prague. He is credited with a number of ...

 

Tom Noddy

Welcome to the magical world of Tom Noddy, who has been enchanting audiences with his bubble making skills since the 1980s. ...

Verbal Arithmetic

Men in Sheds

Many of the toys you will find in the shops in the High Street, and indeed in online shops as well, ...