Logic
Math Puzzles
Logic
Logic
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A Bargain Hotel?
Three Schlumberger employees, after a day of work in a remote location, arrived at a hotel to pass the night.
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Asking for Directions
What is the minimum number of questions you need to ask to find your way to this lighthouse?
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The Commuter's Choice
Mr. Tsuru commutes each day by train between his home and the downtown office building where he works.
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Find the Heavy Ball
Leo has nine balls, all of the same size. Even though they all looked alike, he knows one of them is heavier than the rest.
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Measure Exactly 8 Liters of Water
Can you measure out exactly 8 L of water?
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Right Amount of Water
Can you measure out exactly 4 L of water? You have three large jugs with capacities of 3, 5, and 8 Ls.
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Telling Time with Fuses
You have some fuses, each of which burns for exactly one hour, but unevenly; that is half a length of fuse does not necessarily burn for half an hour.
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To Tell the Truth
Can you figure out which company has the honest employees?
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What Color Hat?
Lucy had four hats, two red and two blue. She showed them to her three friends, then made them stand one behind another and shut their eyes.
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What's Wrong with This Picture?
Jonathan Hare found this children’s board game called Snakes and Ladders.
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Which Coin Is Fake?
Find which coin among a dozen is the fake.