I could write a post about 11/9… but there is enough crap already written about it… So, here is another puzzle for you!
You have two glasses of equal size. One is half full of Gin and one is half full of Tonic. A shotglass from the Gin glass is poured into the tonic glass, then a shotglass full from the tonic glass is poured into the gin glass. Does the Gin glass have more tonic then the tonic glass has Gin?