To solve the two doors riddle where one door leads to treasure and the other to death, with one guard always lying and one always telling the truth, ask either guard 'What would the other guard say about the correct door?' and then choose the opposite door; this works because both guards will point to the wrong door regardless of which one you ask.
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Deep Dive
Can you solve this? #riddle #puzzle #iqtestAdded:
Let's test your IQ today. There are two doors. If you go into one door, you will find treasure. If you go to the other door, you will meet death. Guards are standing on both sides.
A guard always lies. A guard always tells the truth. And you only have one chance to ask a question. So what will you do? Pause for 3 seconds. Have you thought about it? I will tell you what you will do. You will ask either of the guards. What would the other guards say about the correct door. And then you do the opposite. The logic is that if you ask the guard who is telling the truth, what will this guard who is telling a lie say? So of course he is saying wrong. Then you do the osit. So you did the right thing. If you say that to a lying guard, what will a truthful guard say? So whatever he says, the lying guard will tell you the opposite. So he will again tell the wrong story. So you do the opposite. So then also you win. How many people did it shine through?
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