Jobs & Education1 min ago
Logic - I think
Four people are placed in holes in the ground, in a straight line, three on one side of a wall, one on the other. Each is blindfolded and given a cap - two black and two white. When the blindfold is removed, any ONE of them (and just one of them) must state with conviction "the colour of my cap is..." (there are, of course, dire consequences for getting it wrong).
The blindfolds are removed and one person makes the asertion and gets it right.
Which person and how did s/he know for sure?
Any help gratefully received.
Answers
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For more on marking an answer as the "Best Answer", please visit our FAQ.Does that really answer the question? Surely the three are facing forward and in a straight line. Each can see those in front - but not behind!
If there is an immediate answer, then I agree that it must come from the one at the back of the three (who can see the other two and see that they have the same colour, say). But what if there is NOT an immediate answer?
In this second scenario, I believe the middle person of the three has a chance of calling out their right colour by waiting a while and then calling out the colour OPPOSITE to the one in front of him/her.
By pausing through the silence, s/he willl know that the back person is looking at different coloured hats ...