A Stock Symbol - or Ticker - is a series of characters (usually letters) that represent the company on a stock exchange. Most are simple abbreviations of the company name but some are more creative than that. Test your knowledge of some of the best ticker symbols with these multiple choice questions...

Great architecture combines art and science to create structures of aesthetic appeal and functionality. Test your knowledge of this fascinating subject with these multiple choice questions...

The history of aviation is packed full of amazing aircraft, used both commercially and in military operations. How much do you know about these magnificent flying machines?

The vastness of space is mind-boggling for most of us, yet we remain fascinated with life beyond our own planet. Test your knowledge of our solar system with these multiple choice questions.