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Empty the 5 litre can into the 3 litre can leaving 2 litres in the 5 litre can.
Pour away the contents of the 3 litre can.Fill the 3 litre can with the 2 litres from the 5 litre can leaving 2 litres in the 3 litre can.
Fill the 5 litre can from the tap.Fill the remaining 1 litre space in the 3 litre can from the 5 litre can.Leaving 4 litres in the 5 litre can.
Number 2 -
Fill the 3 litre can from the tap.Empty the contents of the 3 litre can into the 5 litre can.
Fill the 3 litre can from the tap.Empty the contents of the 3 litre can into the 5 litre can leaving the 5 litre can full and 1 litre in the 3 litre can.
Pour away the contents of the 5 litre can. Pour the 1 litre from the 3 litre can into the 5 litre can.
Fill the 3 litre can from the tap. Empty the contents of the 3 litre can into the 5 litre can leaving 4 litres in the 5 litre can.
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Q3. There are 8 balls, 7 weigh 100 gms, 1 is defective, there is a weighing scale, any number of balls can be measured at the same time. in how many attempts defective balls can be found out.