just ask if 1+1=2 and then go to the door that the person says yes.
The Liar and the Truth Teller
ask the 2 guards which door the other guard would choose and then go to that the other door.
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What if the lier points the the death door and what if the truth guard tells the right door
the truth guard will point to the death door becuase that is what the liar would have pointed to if asked which door will lead to freedom
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There are two guards and two doors. One door leads to freedom, and the other to death. One guard always lies, the other always tells the truth. They know which they are. They know where the two doors go. You do not know which guard is which or which door is which. You may ask one yes or no question. What do you ask to determine which door leads to freedom?