## Wednesday, July 04, 2007

### Get your thinking wigs on!

Here is a hair erm...'stretching'(?) question that you might prefer to my other post. ;) I opened a document named 'hair puzzle' and there I found this. It's one of the many things which I've saved but not attempted! Anyway, will have a proper look at this in the morning. Enjoy.

Professor White, Professor Brown and Professor Black were lunching together."Isn't it remarkable", said the lady, "that our names are white, black and brown and one of us has black hair, one has brown hair, and one has white hair."

"It is indeed", said the one with the black hair, "and have you noticed that not one has hair color to match our name?"

The lady's hair is not brown. What is the color of Professor Black's hair?

I'm indeed going to sleep earlier than normal. Strange, strange indeed. (Please don't tell anyone!) Oh and I just wrote the title now- call it an inspirational choice, but don't shoot the messenger!

bwagner said...

There's an important bit of information missing! Here's the complete riddle. It originates from M. Gardner ("Combinatorial Card Problems" in "Time travel and other mathematical bewilderments", W. H. Freeman, New York, 1986 as quoted by David Joyner: "Adventures in Group Theory", second edition, Johns Hopkins University Press, 2008, p. 7)

Professor White, Professor Brown and Professor Black were lunching together."Isn't it remarkable", said the lady, "that our names are White, Black and Brown and one of us has black hair, one has brown hair, and one has white hair."

"It is indeed", answered the one with the black hair as Professor Black bit into his sandwich, "and have you noticed that not one has hair color to match our name?"

The lady's hair is not brown. What is the color of Professor Black's hair?

Beans said...

Thanks for that! I will update this post ASAP (and attempt to solve this problemt too... hopefully!).