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bhunders
 Senior Boarder
Posts: 67 
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There are N boxes contaning marbles. Each marble weighs 10 gm. But some boxes have faulty marbles, each weighing 9 gm only. You have a spring balance. Weighing just once how can you tell which boxes contain faulty marbles.
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124C41
Senior Boarder
Posts: 69
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Yes, the popular version of this puzzle contains only one faulty box.
Oui, of couse.
yes again, I should have said each box contains sufficiently enough marbles to determine the faulty ones.
YES.
ie, u represent the difference in binary. and the position of 1's in binary representation represent the faulty boxes.
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