onehugeace

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About onehugeace

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  1. onehugeace added a post in a topic Weighing III.   


    I don't think you need to weigh more than once, because the weight of any amount of coins, if all coins were true coins, will always be a multiple of 8. Knowing that three bags are filled with fake coins means that you should be able to figure out the total number of fake coins in the pile that is being weighed, because the true weight should be that multiple of 8. Therefore, it doesn't matter whether you know the weight of a true coin or not. Can you think of a counterexample?
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  2. onehugeace added a post in a topic Weighing III.   

    I think the actual answer is:





    This is a total of 72 coins, and any 3 numbers produces a unique sum that is not matched by any other three numbers.
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