Video: The truthteller and the liar brain teaser
This 7 minute tutorial explains how to go through a simple brain teaser.
The problem we are asked to solve is this: choosing one of two doors to get a treasure which is behind. There are 2 guardians who know where it is, but one always lies and the other always tells the truth, but we don't know who is who. We have to figure out what we could ask and to whom with just one question.
We can practice questions and second conditionals. English subtitles and the diagrams on the blackboard help understanding.
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Idioma:
- Inglés
Recurso educativo
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