There are 3 gentlemen, one of which is blind. They walk in to a room that's completely and fully dark. In this room there are 5 hats. 3 black ones and 2 white ones. Every gentleman picks up a hat without looking at them. The two unused hats are removed. Then the lights go on. We ask gentleman 1 if he knows what hat he's got on without looking at his own hat. He looks at the two other gentlemen and he says "No!". Then we ask gentleman 2 the same questions. He looks around and answers "No!". Now we ask gentleman 3 (blind person) if he knows what hat he's got on. Instantly he yells "Yes!".
The question is, how does gentleman 3 know which hat he's got on?
ANSWER:
[spoiler]
Person 1 does not see 2 white hats.
Person 2 does not see 2 white hats.
BECAUSE in either one of those situations the person would've known what hat he had on which they did not.
Person 2 knows that person 1 did not see 2 white hats. This means that as soon as Person 3 is wearing a white hat he's wearing a black hat since otherwise person 1 would've known what hat he had on. He does not know this so person 3 can't be wearing a white hat.
It's that... simple?
[/spoiler]
Adding another one tomorrow morning!
JD
A king has bought 9 diamonds. He knows, however, that one of the diamonds is a fake and weighs a little more than the other ones so he tells the shopkeeper to get his scale.
With only weighing twice the king already knows which diamond is the fake one.
How did he do this?
Answer will be up tonight.
JD
---------- Post added at 09:18 AM ---------- Previous post was at 08:41 AM ----------
After Midnight got the right answerAnyone else?
A woman has a son. The woman is 21 years older than the son. In 6 years the woman will be 5 times older than her son.
Where is the father?