World's Fastest Number Game Wows Spectators And Scientists

The Japanese have stumbled upon an extraordinary way to do mental arithmetic very, very fast: Become proficient with an abacus, then discard it and do your calculations using a mental image of one. The results are mind-boggling

http://www.guardian.co.uk/science/alexs-adventures-in-numberland/2012/oct/29/mathematics

Add new comment

Plain text

  • Allowed HTML tags: <a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>
  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.