The Fake Coin for iPhone

from Siphon Games, originally released 19th February, 2012

This puzzle is an old problem. You are given n coins, of which n-1 are genuine and one is fake. All genuine coins have the same weight and the fake coin has a different weight. The difference is only perceptible by using a balance. Find the fake coin and tell if it is lighter or heavier in m weighin...


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