Here is a riddle that I like that is based on logic:
A judge that is undecided about a given defendant proposes this to him:
"Out of this courtroom there are 2 doors, one leading to freedom, the other to jail. In front of each door there is one guard, one that tells always the truth and one that always lie. You can ask one question to one of the guards to try to find the door to freedom."
Now: WHAT IS THE QUESTION THAT THE DEFENDAND CAN MAKE, IN ORDER TO KNOW FOR SURE WICH DOOR LEADS TO FREEDOM?
A judge that is undecided about a given defendant proposes this to him:
"Out of this courtroom there are 2 doors, one leading to freedom, the other to jail. In front of each door there is one guard, one that tells always the truth and one that always lie. You can ask one question to one of the guards to try to find the door to freedom."
Now: WHAT IS THE QUESTION THAT THE DEFENDAND CAN MAKE, IN ORDER TO KNOW FOR SURE WICH DOOR LEADS TO FREEDOM?