Brain teasers are one of the best puzzles to test the sharpness of the brain. Readers need to think outside the box for ...

Test your knowledge ahead of the 2023 New Year as Gergely Dudás, a graphic artist from Budapest, Hungary, shares a coffee cup math puzzle. Can you solve it?

Brain teasers have become one of the internet's favourite pastimes. These mind-bending challenges are not only designed to make us think deeply but also evoke curiosity and spark debates online.