Correct.




Not mine answer.

a man enters a house . there are three switches on the wall , each switch turns on a light upstairs . The man cannot see what light he turns on . He is able to go upstairs once . How can he tell what switch operates what light.

Interesting... but try do this one:

3 BK users have a blue tshirt, and 2 have a yellow tshirt. 1 of the BK users with a yellow tshirt is a robot. You are dead.

Nope , its easy , think about it

Turn a light on. After five minutes, turn another light on. After five minutes, turn them off and go upstairs. The warmest one will be the one that you switched on for 10 mins. The less warm will be the one you've turned on for 5 mins. The cold one will be the one you've never switched on.



1.:
3 guys are serving a life sentence in jail, one of them is blind. A guard comes in with 3 red hats and 2 white hats. He tells them that he is gonna put one hat on each of their heads, they each get to see the color of the other two prisoners's hats, but not their own, except the blind dude. He tells each of them that if they can guess the color of the hat on their head he will let them go free, if they guess wrong they die, if they say nothing they stay and serve their sentence.

The first dude guesses, gets it wrong and dies.
The second guy also guesses, also gets it wrong, and dies.
The third, the blind guy guesses the color of his hat and goes free.

2.:
A man needs to get to hospital really quickly because of his injuries, he's no phone and no transport other than his trusty horse. So on Wedsnesday he rides to hospital where they patch him up, it takes two days though but once he's recovered he rides back home on Wedsnesday again.
And he's not a time traveller

The blind guy knows that if the first one saw two white hats, he would know that he had a red hat.
He also knows that No2 did not see two white hats, or he would have known he had a red hat.
If No2 had seen a white hat on the blind guy's head, he would have known he had a red hat, because No2 knows No1 did not see two white hats.

I don't think that would work.




Correct