Quote:
Originally Posted by omk3
Spoiler:
I actually hadn't heard it before, and spent some time chasing red herrings like multiples of twelve.  Fortunately it dawned on me pretty early on, or who knows what crazy idea I might have come up with... |
I have just changed the question slightly to make it a little trikier for people who haven't come across this puzzle before. Anyone who's already answered correctly (all of you so far) doesn't need to answer the added question.