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Universalpsykopath tugs our coat and says: Tell us about your feats of deduction and the little mysteries you've solved. Alternatively, tell us about the simple, everyday things that mystified you for far too long.

(, Thu 13 Oct 2011, 12:52)
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Ok...
So you empty the three gallon container, fill the five, then fill the three from the five so there's two left in the five, mark the spot on the five where the two comes to.
Empty the three out, pour the two gallons from the five back into it, then refill the five up to the mark you made earlier, add the two gallons you poured back into the three earlier and ta da! Four gallons.
Damn, that actually made my head hurt...
(, Fri 14 Oct 2011, 11:21, 1 reply)
Nah, you don't even need to leave a mark
You fill up the 3-gallon tank so there are 2 left in the 5-gallon tank, then empty the 2 gallons into the 3-gallon tank. Fill up the 5-gallon tank again and pour off 1 gallon into the space left in the 3-gallon tank. You've now got 4 gallons in the 5-gallon tank.

I was screaming at Bruce and Sam when they were doing this bit.
(, Fri 14 Oct 2011, 11:30, closed)
Also ...
Empty the 3 tank into the 5 tank twice, leaving you with 1 gallon left in the 3 tank. Empty the 5 tank, then stick the 1 gallon in it, plus a full 3 again.
(, Fri 14 Oct 2011, 11:37, closed)

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