A boy and a girl are chatting.
“I am a boy”, said the child with black hair.
“I am a girl”, said the child with white hair.
At least one of them lied. What colour hair does the boy have?
If you have not tried to solve it, have a go now. For everyone else, the answer is after the break.
Both the boy and the girl must have lied, and therefore the boy has white hair.
I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.