CAN'T FIND IT
You have 11 boxes of candies. Each box contain 10 candies. All candies weights 2grams except candies in one box, which contains candies of 1gram. You have an electric weight machine and you have to find which box haves less weight candies . You have to find minimum how any times you have to weight the candies ?
HELP- YOU CAN OPEN THE BOXES.
NOTE - DON'T ASSUME LUCK OF PERSON
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1 solution
You have an electric weighing MACHINE .Mark the numbers on the boxes as 1,2,3... till 10 and leave 11th box unmarked. Now open the boxes and take as much as candies as marked on box. You have total 55 candies . Now take weight ,if it comes 110 grams as 2 grams per candy ,then defected box is 11th one, if weight comes 119 grams ,1 gram less then it the first box , 2 gram less then second box, and so on... Because the weight less in grams tells about the number less weight candy. Because we have taken as much candy as box number then we can find box easily.