Image Of The Week #10

I'd almost forgotten about this series of entries! ごめんね/I'm sorry!

No pictures of that much interest at the moment since I use them all in my day trip entries, so here's one for all you Vorderman-loving maths freaks:

It is Japanese, although a much bigger phenomenon back home.

(It's a toughie - was used for the 'World Record' Competition)