Dealing with a problem here that probably has a clever solution which is not coming to me: I have an m x n grid. This grid contains some circles. I would like to find a set of squares that covers the ...

Mastercard’s logo has changed little since 1968. The brand’s name was changed from Master Charge to MasterCard in 1979, and its upright font was replaced with italics in 1990, but the core elements – ...

A Venn diagram shows the relationship between a group of different things. It allows us to sort data into two circles which overlap in the middle. Venn diagrams are great for helping us organise two ...

Earlier today I set you the following puzzle: Illustrated below is a quarter-circle, containing two semicircles of smaller circles. Prove that the red segment has the same area as the blue. Solution ...