Today’s challenge comes from the Maths department but does not involve numbers. It is a riddle to put your logical thinking to the test. Can you escape? Have a go at the riddle below and email Mr. Walton with your solutions at awalton@stb.lourdesmac.org.uk. 3 ePraise points to anyone who finds the door to freedom. Good luck.

“You are a prisoner in a room with 2 doors and 2 guards. One of the doors will guide you to freedom and behind the other is a prison cell –you do not know which is which.

One of the guards always tells the truth and the other always lies. You do not know which one is the truth-teller or the liar either.

You must choose and open one of these doors, but you can only ask a single question to one of the guards.

What do you ask so you can pick the door to freedom?”

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