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Jhon

27/02/2018 at 07:32
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Eight marbles all have the same size, color, and shape. Seven of them have the same weight and the other is heavier. Using a balance scale, how would you flnd the heavy marble if you make only two weighings?



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    Joshua 27/02/2018 at 08:46

    Balance the two groups of 3 marbles each. If they balance then it is only necessary to balance the remaining two marbles to find the heavy one. If the two groups of 3 marbles do not balance, take the heavier group. Of the 3 marbles in the heavier group, balance any 2 marbles. If they balance, the remaining marble is the heaviest one. If the 2 marbles do not balance, the heaviest will be 1 of the 2 on the balance

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    ¤« 28/02/2018 at 16:04

    Balance the two groups of 3 marbles each. If they balance then it is only necessary to balance the remaining two marbles to find the heavy one. If the two groups of 3 marbles do not balance, take the heavier group. Of the 3 marbles in the heavier group, balance any 2 marbles. If they balance, the remaining marble is the heaviest one. If the 2 marbles do not balance, the heaviest will be 1 of the 2 on the balance



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