BACKGROUND: There are three ancient gods that look very similar to each other, live in a temple. One always tells the truth. One always tells the false. The other just tells randomly.
1. You ask the left god: Who is in the middle? He says: The true teller.
You ask the middle god: Who are you? He says: I’m the liar.
You ask the left god: Who is in the middle? He says: He tells everything randomly.
So who is who?
2. You are to ask only 3 yes/no questions to figure out who is who. The questions are in English, the answers are yes/no.
3. You are to ask only 3 yes/no questions to figure out who is who. The questions are in English, the answers are in their own language which contains only ja/da. And you do not know which words mean yes or no.
- It could be that some god gets asked more than one question (and hence that some god is not asked any question at all).
- What the second question is, and to which god it is put, may depend on the answer to the first question. (And of course similarly for the third question.)
- 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.
- Random will answer ‘da’ or ‘ja’ when asked any yes-no question.
The first riddle is a typical one that I learnt form my childhood. The third riddle is considered the hardest logic puzzle ever (source: wikipedia.org) The second is the one I simplify from the 3rd to learn and improve my logic skills.
Now, I’ve learnt how to overcome the random principle in the riddle. I think it’s great to share these riddles with you guys. Let’s tease your brain ^_^