Measuring Liquid in Gallon Puzzle
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There are three gallons X, Y & Z.
Gallon X having a capacity of eight litres is filled with 5 litres of liquid.
Gallon Y has a capacity of five litres and is filled with 3 litres of liquid.
Gallon Z having a capacity of three litres is filled with 2 litres of liquid.
How can you measure 1 litre of liquid in a minimum number of steps? 
Get a measuring cup that can measure one litre or any container (cup / bottle etc.) having capacity of 1 litre, and take the required quantity of liquid from any of the gallons! 🙂
I mean to say that the question is faulty / does not make sense because it lacks the crucial clause that no additional containers / measuring devices can be used.
With the added clause:
- Fill Z (3-litre) from X. Now, Z contains 3 Litres and X has 4 Litres.
- Fill Y from Z. Since Y has capacity of 5 Litres and is already having 3, it can take only 2 more, thus leaving 1 Litre in Z.
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