TED-ED: Can you solve the counterfeit coin riddle? - Jennifer Lu

The video tutorial presents a problem where the viewer, as the kingdom's greatest mathematician, must identify a counterfeit coin among twelve using a balance scale and only three weighings. The tutorial explains a strategic approach to solve the problem by dividing the coins into piles, using a marker to track results, and employing logical reasoning to narrow down the possibilities. The process involves initial and advanced weighing techniques to determine the fake coin, which is either slightly heavier or lighter than the others. Successfully identifying the counterfeit coin earns the mathematician freedom from the dungeon.

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