A quick diagram:
I- o> o> o> [] o>
the first figure (I-):
Is a man holding a gun
The O> are people facing a direction. The > indicates the way they are facing.
[] is a wall.
The o> are buried in the sand and locked in placed facing towards the wall. They cannot see the person behind them but can see the person in front of them.
They are all wearing hats.
2 are red, 2 are black- the hostages know this.
They cannot see their own hat. Hostage 1 and 3 have the red hats on. 2 and 4 have the black hats on.
The man with the guns says that they will be set free if they can guess the correct colour of their hat but they cannot communicate with each other. If they dont they will be shot. they also know the other man is on the other side of the wall.
Which of the 4 men can know the colour of their own hat? and why?
Remember:
Solid wall blocking the 4th guy, they cannot communicate with each other, they can shout out if they know the right answer and they know there are 2 red and 2 black hats.
I- o> o> o> [] o>
the first figure (I-):
Is a man holding a gun
The O> are people facing a direction. The > indicates the way they are facing.
[] is a wall.
The o> are buried in the sand and locked in placed facing towards the wall. They cannot see the person behind them but can see the person in front of them.
They are all wearing hats.
2 are red, 2 are black- the hostages know this.
They cannot see their own hat. Hostage 1 and 3 have the red hats on. 2 and 4 have the black hats on.
The man with the guns says that they will be set free if they can guess the correct colour of their hat but they cannot communicate with each other. If they dont they will be shot. they also know the other man is on the other side of the wall.
Which of the 4 men can know the colour of their own hat? and why?
Remember:
Solid wall blocking the 4th guy, they cannot communicate with each other, they can shout out if they know the right answer and they know there are 2 red and 2 black hats.