Can you solve the prisoner hat riddle? – Alex Gendler

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-prisoner-hat-riddle-alex-gendler

You and nine other individuals have been captured by super-intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. Unfortunately, they’re not sure whether you qualify, so they decide to give you all a test. Can you solve this hat riddle? Alex Gendler shows how.

Lesson by Alex Gendler, animation by Artrake Studio.

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Fahad Hashmi is one of the known Software Engineer and blogger likes to blog about design resources. He is passionate about collecting the awe-inspiring design tools, to help designers.He blogs only for Designers & Photographers.

38 thoughts on “Can you solve the prisoner hat riddle? – Alex Gendler”

• September 11, 2017 at 8:04 am

The tallest and first person to guess the color will tell what color the next person is wearing. He will get killed but at least the next person will know color his hat is and after saying the correct color he will then tell te next person what color he is wearing. They will do this until the last person. Only one will get killed, there's 10 of them so 9 people will guess the color correctly.

• September 11, 2017 at 8:04 am

If i was i prisoner i would have got us all killed

• September 11, 2017 at 8:04 am

Who wants to give them directions to the white house?

• September 11, 2017 at 8:04 am

How are they humans?just look at them

• September 11, 2017 at 8:04 am

I feel bad for the cows

• September 11, 2017 at 8:04 am

Nice math game

_____________________________________________________________________________________________________________________________

If this would really happen

This will never work

A) Aliens may not play games and have better stuff to do
B) It´s very unlikely that people chosen have that much of height difference to make this possible
C) Everyone must be intelligent enough to undertsand it in less than 5 minutes, which is basically impossible (Many will just freak out for the first few hours at least)
D) And even if everything is just as you whant (Which is more impossible than impossible) there will still be the actual problem: The tallest dude/lady will nearly for sure need to count more than just 10 people, happy counting 10 billion people and never ever miss anyone, since missing even 1 may KILL EVERY SINGLE PERSON ALIVE and it will be your only fault!

• September 11, 2017 at 8:04 am

Well… when you get zapped you we're by yourself so those people got collected in a different place and chances are you don't speak the same language, you're lunch for them

• September 11, 2017 at 8:04 am

So smart that they can't differentiate sentient beings from livestock!?

• September 11, 2017 at 8:04 am

And what if one of the prisonor is bad at math… RIP

• September 11, 2017 at 8:04 am

What if the tallest man is blind

• September 11, 2017 at 8:04 am

Or the person could just say the color of the person right in front of them

• September 11, 2017 at 8:04 am

I thought u said communicating wasnt allowed

• September 11, 2017 at 8:04 am

Can't u just say what colour hat the person in of you has, cos then at least 9 will get it right, the tallest person won't but doesn't matter

• September 11, 2017 at 8:04 am

but you said no coded messages!!!

• September 11, 2017 at 8:04 am

Don't mean to brag, but I got it. Took me an hour though. Nice puzzle.

• September 11, 2017 at 8:04 am

or… you could just say the colour of the hat that the person in front of you is wearing.

• September 11, 2017 at 8:04 am

or everyone agrees to this, who ever is 2nd its gonna start to tell the first one his color whispering of course and the third tells the 2nd and so on.

Yeah, the last one is going to die….

• September 11, 2017 at 8:04 am

How could they even see the hats when their whole face is on one side of their head?

• September 11, 2017 at 8:04 am

So this works because there are no consecutive odd or even numbers

• September 11, 2017 at 8:04 am

I have easier solution

Every person will tell colour of there adjacent one so that it will 100% true
But there will be 50% for the last standing person

• September 11, 2017 at 8:04 am

I'd say monochrome 😉

• September 11, 2017 at 8:04 am

Wait… 2colors 2guesses…

• September 11, 2017 at 8:04 am

This reminds me of kaiji

• September 11, 2017 at 8:04 am

great now I know exactly what to do in this situation!

• September 11, 2017 at 8:04 am

If I was there, I would die because everyone else would mess up.

• September 11, 2017 at 8:04 am

I am a vegan , this why I disliked the video

• September 11, 2017 at 8:04 am

Guys if we take off the hats they would terminate us for cheating it probably can't say all the ends… 📺+📼=🎧 aka. Sound

• September 11, 2017 at 8:04 am

After a year I still don't get it
You are always bound to regret it