Put one coin from the first stack on the balance, two coins from the second stack, three from the third, and so on up to the tenth. Then you weigh.
If the first coin is false, the weight will end in point-one. With false coins in the second stack, the weight would end in point-two, and so on till the last stack, where false coins would result in a weight that is a whole number.
Back to riddle-page
Homepage in English
Homepage in Dutch
