Given 9 balls out of which 1 ball is defected . You have one weighing machine to weight the balls. You can use that weighing machine atmost 2 times to weight the balls. How will you find out which ball is defected ?
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Let's visualize this..
**Among 9 balls, 1 is defected which means other 8 balls are of same weight.
**Now, we will weigh those 8 balls in pair of 4-4 and check whether weight of 4 = weight of other 4? If yes then the ball left out is defected.
**Among 9 balls, 1 is defected which means other 8 balls are of same weight.
**Now, we will weigh those 8 balls in pair of 4-4 and check whether weight of 4 = weight of other 4? If yes then the ball left out is defected.
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