The correct answer of the previous puzzle is
"Write box no on top of each box. Since there are 10 boxes, write box no 1 for the 1st box,box no 2 for the second box, box no 3 for the third box and so on. Now, take out one ball from the 1st box, 2 balls from the second box, 3 balls from the 3rd box and so on. Put all balls which will be 55 in numbers on one side of the weighing scale and put weights on the other side to balance the weight on both sides. Count the total weight. Deduct the total weight from 550. The difference is the box number. If the difference is 6, the balls weighing 9 grams is in box no 6. If the difference is 8, the balls weighing 9 grams are in box no 8."
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