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by William Armstrong
05 May 2012
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Mislabeled Boxes Puzzle

Genre: Logic Rating: 3 - Easy to Medium Source: Unknown
Brain Functions: Logical Thinking / Analysis Hint    Solution

Three closed boxes have either white marbles, black marbles, or both. The boxes are labeled "white", "black", and "both black and white". However, you know that each label is wrong. You may reach into one of the boxes and pull out only one marble. Which box should you remove a marble from to determine the contents of all three boxes?

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