26 Coins
Given `26` coins that look identical. One of the coins is counterfeit, and it weighs less than a regular coin. How can you find the counterfeit coin using three weighings on a balance scale without weights?
Difficulty level (1 very easy - 10 very hard): 3
Topics:
Combinatorics
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Induction (Mathematical Induction)
Logic
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Reasoning / Logic
Algorithm Theory
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Weighing
Combinatorics
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Case Analysis / Checking Cases
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Processes / Procedures
Minimum and Maximum Problems / Optimization Problems
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