|Dwarves with hats 2|
Thanks Minh for this riddle
Tree dwarves are on a single line. So the last of the line sees the two dwarves in front of it, the second can see only the one ahead and the first of the line can't see any of the other dwarves.
Some hats are blue and the other are green.
The dwarves are informed we'll place a hat on her heads, the hats are taken from a 5 hats group within 3 green hats and 2 blue ones
We place the hats and we ask the dwarves from the last to the fist : "Wich colour your hat is?". The last in the file answers "I don't know.", the second one says "I can't know!" and the first of the file (who doesn't see any hat) "I can say the colour of my hat!"
Which colour is it?
Congratulations Matrimba on his solution of the 09/16/2008 but don't look at it, it's always better to find oneself...
If you want to see the (false) solutions which were sent to me.