Interview Puzzles :: Discussion
28 Aug, 2018 6:21 AM
put 6 balls one side and 6 on another side. Choose the side which is heavier from the other side.
i am supposing a heavier defective ball. If u choose the heavier side then divide those 6 balls into group of 3 and repeat the procedure and again take the heavier side of 3 balls. Now u have 3 balls out of which one is defective.
Supposingly you put 2 balls on the balance and their weight is equal then the third ball is defective heavier one.
If the weights are unequal then the heavier one is the defective one.
i have assumed the defective ball to be heavier. Same procedure can be repeated with the lighter defective ball also.