July 13, 2020
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View full lesson:

Want more? Try the buried treasure riddle:

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.

Nguồn: https://destinationtuscaloosa.com/

Xem thêm bài viết khác: https://destinationtuscaloosa.com/game/

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38 COMMENTS

  1. ʂʆåɥƐ ƦīȥƐƦ Posted on July 12, 2020 at 3:38 am

    First one is a Karen and after 5 min the alien fly away

    Reply
  2. xufler Posted on July 12, 2020 at 3:38 am

    imagine being the tallest guy and then you accidentally count wrong

    Reply
  3. Lazyraisin123 Posted on July 12, 2020 at 3:38 am

    Those are some rlly specific conditions and rules

    Reply
  4. Sindhu Buggana Posted on July 12, 2020 at 3:38 am

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    Reply
  5. Lois Osorio Posted on July 12, 2020 at 3:38 am

    0:09

    When mom tell u dinner is ready but ur playing online game

    Reply
  6. Joe P Posted on July 12, 2020 at 3:38 am

    I have a much simpler solution as long as the person is allowed to pause before answering or not. The person behind says the color of the person in front of them. Of course the first person will simply say the color of the one ahead of them. Then the rule begins. No pause means you're saying your hat color plus the color of the person ahead of you. Your hat color after a 5 second pause means the person in front of you has the opposite color.

    Reply
  7. Raicy Ceprine Posted on July 12, 2020 at 3:38 am

    This is very hard even though I understand it

    Reply
  8. Markus Tiefert Posted on July 12, 2020 at 3:38 am

    Could this technique be used to save memory and clock cycles in a computer algorithm that checks if transmitted bits were received correctly? I mean, a parity system where you want to make sure no bits get corrupted because they were misunderstood by the receiver. For instance, I say the number five, and then I ask you to repeat what I said, to confirm that you Heard me correctly. If you don’t say the number five, Then I know you misunderstood me, and I should try retransmitting the five. That’s computer parity checking

    Reply
  9. Patrick Wang Posted on July 12, 2020 at 3:38 am

    2:39 there is no point if he can just look at his hat

    Reply
  10. Daljit Johal Posted on July 12, 2020 at 3:38 am

    Just tell the colour of your immediate next person as the colour of your hat. In that case, also at least 9 of them will guess correctly. No need for having such a difficult plan.

    Reply
  11. Chaleureuse Nikolai Posted on July 12, 2020 at 3:38 am

    Unless the one infront of u is patrick

    Reply
  12. GamerNoir gamernoir Posted on July 12, 2020 at 3:38 am

    the brains in this

    Reply
  13. Elements of Light and dark Posted on July 12, 2020 at 3:38 am

    No one:

    Not even Leah Ashe:

    Not even the world:

    Ted ed: oH yea uhhh 😬 OH yea aliens have phones that have translate-r apps 😬

    Reply
  14. Dylan McGill Posted on July 12, 2020 at 3:38 am

    good point next time I’m abducted by aliens I will hope every other single person will somehow know this secret code that none of us are allowed to discuss

    Reply
  15. Matthew Smith Posted on July 12, 2020 at 3:38 am

    My answer: Just look up like so: 2:41.

    Reply
  16. Bader Momani Posted on July 12, 2020 at 3:38 am

    Why not just say the color of the hat in front of u,

    Reply
  17. Vishwa Vichu Posted on July 12, 2020 at 3:38 am

    TedEd you are cruel at last

    Reply
  18. Saurabh Goel Posted on July 12, 2020 at 3:38 am

    why always eating cow is promoted. she feeds us with milk like our mother. how can even we think about it.

    Reply
  19. Arcana IX Posted on July 12, 2020 at 3:38 am

    Course, this is assuming you all have a height that allows all of you to see the everyone in front of you. Though, admittedly there is nothing that states that you can’t just lean left or right, but I wouldn’t be surprised if that counts as getting out of line.

    Reply
  20. Al Ma Posted on July 12, 2020 at 3:38 am

    The riddle setup is a complete fail. The person in the first position cannot see down the line if the people further away are getting shorter because the person directly in front is blocking the angle of sight. Only way for the first guy to see everyone down the line is if everyone progressively gets taller with the tallest guy at the other end. SMH

    Reply
  21. Xyclone Turbo Posted on July 12, 2020 at 3:38 am

    we should probably all remember the strategy so when the aliens take over the earth next month we all know what to do

    Reply
  22. Xiaojun Zeng Posted on July 12, 2020 at 3:38 am

    I’ve seen this riddle on khan academy

    Reply
  23. Narender Khorwal Posted on July 12, 2020 at 3:38 am

    Hindi ma nehi hai

    Reply
  24. YT_ PhotonSparky Posted on July 12, 2020 at 3:38 am

    The super intelligent alien overlords look kinda cute lol 😂

    Reply
  25. SpaceFrog Fro Posted on July 12, 2020 at 3:38 am

    This would be fine unless someone was deaf.

    Reply
  26. isaac priego Posted on July 12, 2020 at 3:38 am

    I have a different solution that is also correct, adhering to every rule and restriction provided:
    They all agree that the first dude will take 5 seconds from the moment the test beggings, for every say white hat he sees. So he sees 4 hats, and takes 20 seconds to answer "white". In that very moment, everyone else knows what their hat color is.
    This does not violate any rule at all as no one is forced to answer immediately when it's their turn.

    Reply
  27. Luna Huwaida Posted on July 12, 2020 at 3:38 am

    I would be so nervous I couldn't tell what that odd/even numbers even mean

    Reply
  28. Pablo Lopez Posted on July 12, 2020 at 3:38 am

    Is not easier if the person says the color that has the next person? You know 9 of 10, thats what you need.

    Reply
  29. H.J.W.N Crazy Girl Posted on July 12, 2020 at 3:38 am

    the only teded riddle I solved

    Reply
  30. Disintegration Posted on July 12, 2020 at 3:38 am

    Step one: confirm that u have green eyes
    Step two: leave calmly

    Reply
  31. tassay Posted on July 12, 2020 at 3:38 am

    this was the easyest TED-Ed riddle by far. or maybe i was just lucky that my first idea was right

    Reply
  32. Saint Geraldine Posted on July 12, 2020 at 3:38 am

    Why not saying the hat color that people front of you wear?

    Reply
  33. 1002강민재 Posted on July 12, 2020 at 3:38 am

    이문제에 대하여 많이 생각을 해보아서 풀었습니다. 머리가 벌써 유들 유들 해지는 것같습니다. 많은 생각을 해보는 재미있는 시간이 되었습니다. 유익한시간 감사합니다.

    Reply
  34. Xoie Veck Posted on July 12, 2020 at 3:38 am

    I still don't get it- someone please explain

    Reply
  35. Jeff Martin Posted on July 12, 2020 at 3:38 am

    I love riddle

    Reply
  36. Khaled Sakhel Posted on July 12, 2020 at 3:38 am

    I believe an easer solution is for each one to say the color of the hat of the one standing in front of him/her starting from the tallest to the shortest, and the shortest one will guess the color of the first persons' (tallest) hat

    Reply
  37. Will Padgett Posted on July 12, 2020 at 3:38 am

    Was pretty sure this was going to set up Circle (2015)

    Reply
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