Question 121

You have three chests in front of you. The first chest is labeled “GOLD”, the second is
labeled “SILVER” and the third is labeled “GOLD OR SILVER”. You have been told that all the
labels are on the wrong chests and that one chest contain gold coins, one contains silver
coins and one contains bronze coins. How many chests do you need to
open to deduce which label goes on which chest?

Solution

It is given that the labels are wrong.

For the Chest labelled "Gold or Silver": It should not have either Gold or Silver. Hence it has Bronze coins

For the Silver labelled chest. It can't have silver and broze is in other chest. Hence it has Gold Coins

Thus Gold labelled chest will have Silver coins.

We need not open any chest to determine the labels

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