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No: 17       November 29, 2017


FIVE BALLS

FIVE BALLS

Five identical looking balls weigh 1, 2, 3, 4 and 5 grams. You want to find weight of each ball using a digital scale with a single pan by always measuring total weight of 3 balls.

At least how many times you need to measure, in order to guarantee finding the weights of every ball?


Popularity: 58.3 %     Difficulty: 28.1 %    


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