Gizmodo Monday Puzzle: Can You Detect the Counterfeit Coins?

Welcome to the first Gizmodo Monday Puzzle, a new series in which I will pose thought-provoking challenges at the beginning of every week to jumpstart your brain. I am a lifelong puzzle lover, sometime puzzle creator, and new Gizmodo puzzle writer. Many of the teasers posted here will be difficult—but they will be…

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