Another mind-bender1

[Dayvo]

Along the lines of 'Bird in a box', if you can put up with the 'presentation', this is a good mind-bender!

http://www.boreme.com/boreme/funny-2007/missing-dollar-puzzle-p1.php

 

[Shaun]

Ah, the old missing dollar story eh!

Drove my niece mad with that one

 

[graham56]

Bit like counting your fingers 1 to 10. Then counting back 10 to 6 on one hand plus the five on the other =11, if you see what i mean.