Add Yahoo as a preferred source to see more of our stories on Google. A Chinese genius flexed his mathematical prowess by solving a problem that flummoxed a team of mathematicians with Ph.D.s for four ...

IQ tests present the readers with problems in the form of picture puzzles or math problems, and the reader needs to find the solution within a time limit. These simple puzzle games make the brain ...

It's a deceptively simple arithmetic problem that has left millions scratching their heads. And no one can agree on the correct answer despite its lack of large figures or intricate calculations. The ...