Problema Solution
You are given three piles of 10 peso coin. One pile is a counterfeit coins, heavier than the genuine ones. Explain how you ca pick out the pile of counterfeit coins in a one-step procedure, using an equal arm balance.
Answer provided by our tutors
Put one coin from any of the two of the piles on the scale. If one of the coins is heavier, that's the fake pile. If the coins weigh the same, the fake pile is the one you didnt weigh a coin from.