Neil Saunders does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs less than the real ones. Using a set of old-fashioned balance scales, what ...

Senior Lecturer in Mathematics, Department of Mathematical Sciences, City St George's, University of London Mathematics is a “science which requires a great amount of imagination”, said the ...

This apparently simple puzzle has proved to be a genuine brain-bender. Even the most basic of mental challenges can deliver significant benefits for our cognitive wellbeing, helping to stave off ...

Label the rectangles correctly with the letters A to I. Show puzzle solution Only the four blue-shaded rectangles below intersect three other rectangles, and therefore they must be F, G, H and I. H ...

A detailed look at tackling a clever sphere-based pyramid puzzle, highlighting its design, the problem-solving process, and the satisfaction of completing it. Admiral says boat targeted in deadly ...

Located approximately 40 kilometers southwest of Cairo, Saqqara is one of the most important cemeteries of Memphis. Memphis was one of the most strategically important cities in ancient Egyptian ...

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