A person needs a password to go trough a door, someone at the other side says "eight", the person replies "four" and the door is opened. Somebody else notiiced this and knocks the door. He hears "ten", then he responds "five" but the door is not opened. What should he have answered to go through?
215102
The most obvious answer is 6 (as described above).\n\nBut here's another option...\n\nThe correct answer to "10" could be 2.\nIn the case of the password for "eight" being 4, it could be the number of letters in the word "eight" minue one (5-1=4).\nTherefore, the answer to "10" would be 3-1=2.
290027
you ask the guard what would the other guard say if you asked him which door to go through, and then go through the opposite..
650337
"A" for A, B, C's ...\nJust like the "1" lights up for Number Lock instead of "#"\n\n"A" seems like a good place to start!
144397
Why do you want someone else's password??  Mind your own business!  Two points for me. : )
582464
Have you forgot the password... it is CASE sensetive
258047
Ask the room(1) guest to move to room(2), room(2) guest to move to room(3), room(3) guest to move to room(4), ....., in general move room(n) guest to move to room(n+1), ....\n\nAsk the new guy to stay in room(1).
110586
Depends. Typically, I would say yes, you should ask who is there, and most especially if you're in a dangerous environment. It's always a good idea to have people identify themselves while they are on the outside of a door.\n\n~~Naomi\n\nP.S. You could also say "yes?" or "may I help you?". Those work just as well.
23237
create a password that nobody knows. that is all i can think of
538164
(Customer): Ummm, hi could you help me repair my machine?\n(me): Yeah sure, what seems to be the problem?\n(Customer): I ummm...cauht my...ummmm....son donwnloading explicit imagery and, i, i mean he has caused my system to become slow and has lots of virus's.\n(me) sure, leave it with me and you will have it in a few hours\n\nafter doing many checks on the machine i find over 300 explicit images on the customers screen name! i confronted him about this and he said his son got hold of his password. i later find out his son is 4!!!\n\nwell, it made me chuckle.
669707
Here is some good riddles for you...\n\nQ: What happened in 1961 that will not happen again for over 4000 years?\nA: The year's date reads the same when turned upside down. That will not happen again until 6009. \n\nQ:  A  man wanted to enter an exclusive club but did not know the password that was required. He waited by the door and listened. A club member knocked on the door and the doorman said, "twelve." The member replied, "six " and was let in. A second member came to the door and the doorman said, "six." The member replied, "three" and was let in. The man thought he had heard enough and walked up to the door. The doorman said ,"ten" and the man replied, "five." But he was not let in. \n\nWhat should have he said?\n\nA:Three. The doorman lets in those who answer with the number of letters in the word the doorman says.
632381
Voice:\nPress 1 to check your bills.\nPress 2 to pay your bills.\nPress 3 to go to main menu\n\n<< Sean presses 0 >>\n\nVoice:\nPress 1 to....\n\n<< Sean presses 0 again >>\n\nVoice:\nPress 1 to ch.....\n\n<< Sean presses 0 again >>\n\nVoice:\nLet me connect you to a representative, please hold.....\n\nIt works everytime =)
402478
If this is a clue from a cryptic crossword puzzle, do you have any letters?\n\nAlso, does it have to be ONE word or could it be several?
93100
My door is always open for sure.  I figure whomever is supposed to come will come.  I'm not in charge of fate or the destiny of others.  I don't believe in security - that it exists is a fallacy.  An open door to a criminal creates suspicion and they won't have it...they'd rather break and bust their way in.  An honest person would feel normal walking through my open door as they are 'open' themselves.  So it makes sense to leave the door open for honest folks, and know that an open door is a closed door to criminals who only always see only closed doors waiting for them to manipulate a way open.
181111
This is known as the Monty Hall problem.\n\nIn September 1990, Marilyn vos Savant, puzzle columnist for the U.S. magazine Parade, was sent a probability teaser by a reader. \n\nIts publication in her "Ask Marilyn" column together with her solution has produced much debate amongst mathematicians and laymen alike ever since. \n\nApart from its challenge to common intuition, one reason it has attracted so much interest is that Ms von Savant is listed in the Guinness Book of World Records as having the highest recorded score in an IQ test (228) and so proving her wrong would have a certain satisfaction to it.\n\nTo date, Ms vos Savant has received over 10,000 letters on the puzzle, mostly disagreeable, and articles are still being written claiming new insights that show where Ms vos Savant got it wrong.\n\nMonty Hall was a game show host. There was a luxury car  behind one of 3 doors. The other two doors had goats behind them. Contestants on the show were asked by Monty to choose a door. \n\nHe then opened one of the other doors to reveal a goat and said you could stick with your original choice or switch to the other remaining dooir, if you wanted to. \n\nThat is where this puzzle comes from. The advice is correct. Switching increases the odds from 1/3 rd to 2/3 rds of getting the car. Surprising as that seems. \n\nThink of it this way. Whichever door you choose initially, your chance of success was 1/3 rd. \n\nThen the number of doors is reduced to two. So the chance that the other remaining door is the right one must be 2/3 rds. Because it cannot be the door that has been revealed to have a goat behind it. \n\nWhen you were choosing between three doors, the chance that it was behind one or other of the two doors you didn't choose was 2/3 rds. And it still is, except there is now only one such door left, it having been demonstrated that the other not-chosen door concealed a goat.\n\nIntuition suggests that once one door is eliminated, the chances are 1/2 for each of the two remaining doors, but intuition can be wrong. You can see why the Monty Hall problem generated such controversy, can't you? It has been puzzling and infuriating people for over 15 years now. This one will run and run.
295911
He should ask either guard this question. “What door will the other guard tell me to go through?” Then what ever door the guard tells him he simply exits the opposite door. \n\nTwo negatives make a positive.
593013
I pick "1". hey, that's what you said! It's not a choice though.\n\nDo you not have a book? Or some type of reference from the class? These kinds of questions can only be answered by the author of the question, meaning USE YOUR BOOK.
304555
He should have said "three" because the club rules state that you must give the number of letters in the number given you by the doorman for entry.