Water Jug
Braingle.com
on
Published in Brain Teasers
Six.
1. Fill the nine-liter jug from the pool.
2. Fill the four-liter jug from the nine-liter one, leaving five liters in the larger jug.
3. Empty the four-liter jug, and empty more water into the nine-liter one -- this will leave one liter of water in the larger jug.
4. Empty the four-liter jug again, and pour the one liter remaining into it.
5. Fill the nine-liter jug from the pool.
6. Fill the four-liter jug, which already has one liter in it, from the larger jug -- this would take only three liters, leaving exactly six liters in the nine-liter jug.
Today's brain teaser courtesy of Braingle.com.