# Logic Puzzle

• Dec 27th 2005, 08:21 AM
Logic Puzzle
Three gods A , B , and C are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter.

Your task is to determine the identities of A , B , and C by asking three yes-no questions; each question must be put to exactly one god. The gods understand English, but will answer in their own language, in which the words for yes and no are “da” and “ja”, in some order. You do not know which word means which.

SOLUTION
______________________________

http://hcs.harvard.edu/~hrp/issues/1996/Boolos.pdf
______________________________
• Dec 27th 2005, 04:03 PM
ThePerfectHacker
The problem with liar and truth riddles is this:
Let us assume the problem was one always says the truth and the other always says a lie then you can do the following easy trick. Ask one of them "Am I immortal?" if he will say "Yes" than he must be a lair. If he says "No
" he must be honest. I know this is a dirty move and the riddle is not supposed to be solved like that but it works :).

I do not know if this strategy works here also, but there are a number of riddle where it does.
• Dec 27th 2005, 09:10 PM
This strategy may be useful if adapted. However, as it is, it cannot work: (a)you don't know if you're talking to Random and (b) you don't know whether "da" or "ja" mean yes/no.
• Jan 21st 2006, 11:48 AM
SkyWatcher
ô my Dog
hy!
interesting this puzzle i have got some clues for the solution
i would hask 2 question to Mr stone:
are the god using the same dialect.
do they no something about the future, that would make a second difference whith normal human beeing , the first is that they Always say truth or Lye!
i think i am very near hit but i don't want to ask god too sophisticated da or ja conjoncture.
by!
• Jan 22nd 2006, 11:03 AM
SkyWatcher
Quote:

Originally Posted by SkyWatcher
interesting this puzzle i have got some clues for the solution
i think i am very near heat but i don't want to ask god too sophisticated da or ja conjoncture.
by!

As a mater or fact i don't care if Treadstone answers to my two questions would be da and ja, da and da ,ja and da, or ja and ja
I just wanted to stress that this is an interresting puzzle and that it has a solution.
my personal one involved a strategy and not less than three "clever" tricks
clever means that "clever" people should keep them in a special place of there memory like wise mean that "wise" people should ect...
I know that Threadstone had put a white link to a pdf stuff but personaly i cannot read it (i dont know if its a Threadstone joke or a perticularity of my computer!)
See you i have got one more "riddle" to finish!
• Jan 22nd 2006, 11:51 AM