2 MOST Difficult Riddles in the world - Hardest riddles EVER! (2017)

These are the actual world's hardest riddles! It is the hardest riddle ever created in the world! These are riddles for genius ONLY... LOL! 99.99% of the people in the world cannot solve these riddles due to their extreme level of difficulty! This video includes the 3 unmarried daughters riddle and the 3 gods riddle!

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----MUSIC----
Jim Yosef - Canary [NCS Release]

----INTRO----

~Kingsaw

[bleach]

I ABSOLUTELY LOVE UR VIDEOS MAN! Keep up the great work!👌👌

[AlAl-lctz]

I dont get why the man doesnt just ask the father who each of the girls ages are

[zom]

Answer to the last one: Boolos provided his solution in the same article in which he introduced the puzzle. Boolos states that the "first move is to find a god that you can be certain is not Random, and hence is either True or False".[2] There are many different questions that will achieve this result. One strategy is to use complicated logical connectives in your questions (either biconditionals or some equivalent construction).

Boolos' question was to ask A:

Does da mean yes if and only if you are True, if and only if B is Random?[2]
Equivalently:

Are an odd number of the following statements true: you are False, da means yes, B is Random?
It was observed by Roberts (2001) and independently by Rabern and Rabern (2008) that the puzzle's solution can be simplified by using certain counterfactuals.[5][7] The key to this solution is that, for any yes/no question Q, asking either True or False the question

If I asked you Q, would you say ja?
results in the answer ja if the truthful answer to Q is yes, and the answer da if the truthful answer to Q is no (Rabern and Rabern (2008) call this result the embedded question lemma). The reason this works can be seen by studying the logical form of the expected answer to the question. This logical form (Boolean expression) is developed below ('Q' is true if the answer to Q is 'yes', 'God' is true if the god to whom the question is asked is acting as a truth-teller and 'Ja' is true if the meaning of Ja is 'yes'):

How a god would choose to answer Q is given by the negation of the exclusive disjunction between Q and God (if the answer to Q and the nature of the god are opposite, the answer given by the god is bound to be 'no', while if they are the same, it is bound to be 'yes'):
¬ ( Q ⊕ God)
Whether the answer given by the god would be Ja or not is given again by the negation of the exclusive disjunction between the previous result and Ja
¬ ( ( ¬ ( Q ⊕ God) ) ⊕ Ja )
The result of step two gives the truthful answer to the question: 'If I ask you Q, would you say ja'? What would be the answer the God will give can be ascertained by using reasoning similar to that used in step 1
¬ ( ( ¬ ( ( ¬ ( Q ⊕ God) ) ⊕ Ja ) ) ⊕ God )
Finally, to find out if this answer will be Ja or Da, (yet another) negation of the exclusive disjunction of Ja with the result of step 3 will be required
¬ ( ( ¬ ( ( ¬ ( ( ¬ ( Q ⊕ God) ) ⊕ Ja ) ) ⊕ God ) ) ⊕ Ja )
This final expression evaluates to true if the answer is Ja, and false otherwise. Comparing the first and last columns makes it plain to see that the answer is Ja only when the answer to the question is 'yes'. The same results apply if the question asked were instead: 'If I asked you Q, would you say Ja'? because the evaluation of the counterfactual does not depend superficially on meanings of Ja and Da. Each of the eight cases are equivalently reasoned out below in words:

Assume that ja means yes and da means no.
True is asked and responds with ja. Since he is telling the truth, the truthful answer to Q is ja, which means yes.
True is asked and responds with da. Since he is telling the truth, the truthful answer to Q is da, which means no.
False is asked and responds with ja. Since he is lying, it follows that if you asked him Q, he would instead answer da. He would be lying, so the truthful answer to Q is ja, which means yes.
False is asked and responds with da. Since he is lying, it follows that if you asked him Q, he would in fact answer ja. He would be lying, so the truthful answer to Q is da, which means no.
Assume ja means no and da means yes.
True is asked and responds with ja. Since he is telling the truth, the truthful answer to Q is da, which means yes.
True is asked and responds with da. Since he is telling the truth, the truthful answer to Q is ja, which means no.
False is asked and responds with ja. Since he is lying, it follows that if you asked him Q, he would in fact answer ja. He would be lying, so the truthful answer to Q is da, which means yes.
False is asked and responds with da. Since he is lying, it follows that if you asked him Q, he would instead answer da. He would be lying, so the truthful answer to Q is ja, which means no.
Regardless of whether the asked god is lying or not and regardless of which word means yes and which no, you can determine if the truthful answer to Q is yes or no. If, however, the god is answering randomly.

The solution below constructs its three questions using the lemma described above.[5]

Q1: Ask god B, "If I asked you 'Is A Random?', would you say ja?". If B answers ja, either B is Random (and is answering randomly), or B is not Random and the answer indicates that A is indeed Random. Either way, C is not Random. If B answers da, either B is Random (and is answering randomly), or B is not Random and the answer indicates that A is not Random. Either way, you know the identity of a god who is not Random.
Q2: Go to the god who was identified as not being Random by the previous question (either A or C), and ask him: "If I asked you 'Are you False?', would you say ja?". Since he is not Random, an answer of da indicates that he is True and an answer of ja indicates that he is False. This question can also be simplified: "Does 'da' mean 'yes'?"
Q3: Ask the same god the question: "If I asked you 'Is B Random?', would you say ja?". If the answer is ja, B is Random; if the answer is da, the god you have not yet spoken to is Random. The remaining god can be identified by elimination.
Boolos' third clarifying remark explains Random's behavior as follows:[5]

Whether Random speaks truly or not should be thought of as depending on the flip of a coin hidden in his brain: if the coin comes down heads, he speaks truly; if tails, falsely.
This does not state if the coin flip is for each question, or each "session", that is the entire series of questions. If interpreted as being a single random selection which lasts for the duration of the session, Rabern and Rabern show that the puzzle could be solved in only two questions;[5] this is because the counterfactual had been designed such that regardless of whether the answerer (in this case Random) was as a truth-teller or a false-teller, the truthful answer to Q would be clear.

Another possible interpretation of Random's behaviour when faced with the counterfactual is that he answers the question in its totality after flipping the coin in his head, but figures out the answer to Q in his previous state of mind, while the question is being asked. Once again, this makes asking Random the counterfactual useless. If this is the case, a small change to the question above yields a question which will always elicit a meaningful answer from Random. The change is as follows:

If I asked you Q in your current mental state, would you say ja?[5]
This effectively extracts the truth-teller and liar personalities from Random and forces him to be only one of them. By doing so the puzzle becomes completely trivial, that is, truthful answers can be easily obtained. However, it assumes that Random has decided to lie or tell the truth prior to determining the correct answer to the question – something not stated by the puzzle or the clarifying remark.

Ask god A, "If I asked you 'Are you Random?' in your current mental state, would you say ja?"
If A answers ja, A is Random: Ask god B, "If I asked you 'Are you True?', would you say ja?"
If B answers ja, B is True and C is False.
If B answers da, B is False and C is True. In both cases, the puzzle is solved.
If A answers da, A is not Random: Ask god A, "If I asked you 'Are you True?', would you say ja?"
If A answers ja, A is True.
If A answers da, A is False.
Ask god A, "If I asked you 'Is B Random?', would you say ja?"
If A answers ja, B is Random, and C is the opposite of A.
If A answers da, C is Random, and B is the opposite of A.
Rabern and Rabern (2008) suggest making an amendment to Boolos' original puzzle so that Random is actually random. The modification is to replace Boolos' third clarifying remark with the following:[5]

Whether Random says ja or da should be thought of as depending on the flip of a coin hidden in his brain: if the coin comes down heads, he says ja; if tails, he says da.


Answer to the first one: Is she older than her?" (He would ask one of the daughters if one of the other daughters is older than the last daughter). He always should pick the younger daughter based on what he knows. If he asks the older daughter and she says yes, then the youngest daughter will be known. If he asks the older daughter and she says no, then the youngest daughter is the other one. If he asks the youngest daughter and she says yes, she is lying and he will still pick the oldest. If he asks the youngest and she says no, he will just pick the other like in the first case. If he asks the middle daughter it doesn't matter because both will be acceptable choices.

[chrisb]

Both riddles are very solvable and involve asking a member how the other ones would respond. Thanks for uploading.

[EmeraldSwordGamingYT]

Question one, they ask them something like "is one + one two?" the older one will say yes, the youngest will say no, and the middle one will say yes or no. If they say yes, the guy knows one of the people who said yes was the older one, and the other the middle. This means the one that said no is the younger one. So he can go with her.

If the middle one said no, by the same logic he would know that the ones who said no were the youngest and middle, therefore the older one said yes, and he can go with her!

Ez

[SANKHA]

Ask anyone: "Are you married?"
Youngest will answer YES
Eldest will answer NO.

[sofutofu]

this is me

step one: listen to the vid

step two:work out the answer

step three : listen to the answer

wait I think they missed a step

[andreea]

1. Is John you'r dad?
The oldest girl will say yes, the youngest will say no, and the middle one will say no (for example).So the young man will choose the oldest girl. *He will choose the girl that has an unique answer.*

2. I don't know

[bilalashraf]

Ask anyone: "Are you Youngest?"
Youngest will answer No
Middle will say either yes or no
Eldest will answer No.

Then he can simply asked from his father which one is youngest
LoL

[brianaangel]

the father asked the question. "is 3+5=8" if she says yes she is the daughter that tells the truth, if she says no she is the one that lies🙀

[rumanabano]

this cute little rabbit 🐰 has no family and friends your likes will be her friends please 😢

[girlgaming]

Answer 1: "Is she older than her" (gesture to the two other daughters)

You would take the daughter's word for it every time and pick what they say is the youngest daughter.

The oldest will tell the truth and tell you which is the youngest

The youngest will lie and say that the oldest is the youngest. (You pick what she says is the youngest so it doesn't matter)

And the middle doesn't matter because you won't pick the person you are asking.

[arunkumar]

ans 1: what is your age?
ans 2: do you know to answer in English?

[divinestar]

I love this quiz and l am really a big fan of you 😊😊😊😊😊😊

[SANKHA]

Man asks:
Are you married?
Eldest: No
Youngest: Yes
Middle: Yes / No

If Middle says : Yes,
Then there will be two "YES"
Now he can surely figure out tge Eldest with only one "NO" answer

If Middle says : No,
Then there will be two "NO"
Now he can surely figure out tge Youngest with only one "YES" answer

[jaeminyearsago]

Man....
"You are the oldest?"
Oldest: Yes
Youngest: No

[gandhamsanthosh]

I got the answer dude(1#)
He would ask- who will always lies?
The logic is the one who is always true says the answer first (oldest- not me)
It is then followed by the youngest (not me)
Finally the middle one would not give any answer as she would be confused

[walker]

You could ask any one, “if was the one who answers randomly, would you say yes?” If they answer yes you know that one is the one who answers randomly and if they answer no, you know that they aren’t the one who answers randomly.
If you think about it, if you asked that question to the one that tells the truth, and the sister you asked about is the random one, she will answer yes because she will tell the truth. But if the one you asked is the liar, they will lie and also say yes. Another way of thinking about it is that a double positive and a double negative both result in a positive.

[somaumas]

answer 1: Is my name John
answer 2: I dont know lol

[destinymay]

Me looking to see if there is an answer