There are 7 balls which looks similar in shape. however 6 balls are of same weight and one ball is some what less in weight than other 6 balls.
you have a weighing scale.
how you will find ball with less weight with two scaling attempts ?
1 scaling: -- weight 3 balls against 3 balls
if it weigh's equal it means remaing ball is the smaller one.
if one of the side lower than other then do the second scaling with those 3 balls
1 against 1.
if equal remaining will be smaller else one of the balls currently weighing is smaller.
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