Quote:
Originally posted by bparker805
set each bag on the scale one at a time and wacth the weight after putting a bag on. once you see the total weight increase by 11 grams, you've got your winner.
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Thats not one weighing.
Put 1 coin from the first bag, 2 coins from the second bag, 3 coins from 3rd bag,....etc... onto the scale, and do one weighing.
If its x grams overweight, then the xth bag is the counterfeit bag...
I'm assuming that each coin weights 10 grams here, and each counterfeit coin weighs 11 grams.