Riddle Thread

Status
Not open for further replies.

Kakashi

smile, because I hate you
Joined
Feb 2, 2003
Messages
452
Location
In my bubble
Has there ever been a riddle you couldent ever figure out, not even now?
 
what do you think of that one: What's the difference between a duck?
 
Originally posted by Perfection
Nope, never.

Edit: Oh, and pascal, that's not a riddle, just a illogical question

Did you try to solve my riddle in the last riddle thread? No one got it...

Here's an easy one:

Local Berkeley professors Dr. Demmel and Dr. Shewchuk bump into each other on Telegraph Ave. They haven't seen each other since Vietnam.

Shewchuk: hey! how have you been?

Demmel: great! i got married and i have three daughters now

Shewchuk: really? how old are they?

Demmel: well, the product of their ages is 72, and the sum of their ages is the same as the number on that building over there..

Shewchuk: right, ok ... oh wait ... hmm, i still don't know

Demmel: oh sorry, the oldest one just started to play the piano

Shewchuk: wonderful! my oldest is the same age!

How old are the daughters?

And here's the one I asked in the last thread, that no one got:

There are three omniscient gods sitting in a chamber: GibberKnight, GibberKnave, and GibberKnexus, the gods of the knights, knaves, and knexuses of Gibberland. Knights always answer the truth, knaves always lie, and knexuses always answer the XOR of what the knight and knave would answer.

Unfortunately, the language spoken in Gibberland is so unintelligible that not only do you not know which words correspond to "yes" and "no", but you don't even know what the two words that represent them are! All you know is that there is only one word for each.

With only three questions, determine which god is which.


--------------------------------------------------------------------------------

Note 1: What follows are standard rules that are generally assumed unless otherwise noted. The gods only answer yes/no questions. Each god answers in the single word of their language as appropriate to the question; i.e. each god always gives one of only two possible responses, one affirmative and one negative (e.g. they would always answer "Yes" rather than "That would be true"). Each question asked must be addressed to a single specific god; asking one question to all the gods would constitute three questions. Asking a single god multiple questions is permissible. The question you choose to ask and the god you choose to address may be dynamically chosen based on the answers to previous questions. No self-referential questions (e.g. "is this question true iff ...").

Note 2: Because of possible loop conflicts, you may not ask any questions regarding how a knexus would answer.
 
Status
Not open for further replies.
Back
Top Bottom