Forget the traditional, cumbersome method and use this trick: to multiply a number by 5, divide by 2, and move the decimal point one decimal place to the right. SO, if, say, you had the number 8,600 ...

PITTSBURGH (KDKA) -- In one of the very first Hey Ray! segments, I showed you a magic trick with cards that was just math disguised as magic. I think it is time to bring back some math magic with what ...

In our most recent Insights puzzle, I challenged readers to figure out how certain magic tricks work. The tricks in question were of the sort where the magician somehow divines the identity of your ...