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How long does it take the men to remove the hats?

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A bunch of men are on an island, A genie comes down and gathers everyone together and places a magical hat on some people’s heads (i e , at least one person has a hat). The hat is magical: it can be seen by other people, but not by the wearer of the hat himself. To remove the hat, those (and only those who have a hat) must dunk themselves underwater at exactly midnight. If there are n people and c hats, how long does it take the men to remove the hats? The men cannot tell each other (in any way) that they have a hat.
Note: Genie does not tell how many hats she has put.

posted Nov 14, 2014 by Akriti

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1 Answer

+2 votes

it will take 'c' days..

answer Nov 18, 2014 by Kshitij Maloo



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