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whiffey | 10:50 Mon 10th Oct 2005 | Quizzes & Puzzles
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Given a 3-litre jug, a 5-litre jug, and an unlimited supply of water, can you get exactly 4 litres into the 5-litre jug ? They are not calibrated.
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Fill the 5 litre jug.

Fill the 3 litre with this.

Leaves 2 litres in the 5 litre jug.

Empty the 3 litre jug away( what a waste).

Pour the remainder of the 5 litre jug into the 3 litre jug.

Fill up the 5 litre jug and pour enough to fill the 3 litre jug.

This should take 1 litre, leaving 4 litres in the 5 litre jug.

Phew!

Question Author
hobbitess, interesting, there are therefore 2 solutions - there is another correct one over in the Chatterbank.
did it the same way hobbitess

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