PROBLEM:
A milkman has two empty jugs: a three gallon jug and a five gallon jug.  How can he measure exactly one gallon without wasting any milk?.
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(use your brain) !!!
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SOLUTION:
The milkman filled the three gallon jug, and then emptied the contents into the five gallon jug.  He then filled the three gallon jug again, and continued to fill the five gallon jug until it was full.  The milk remaining in the three gallon jug was precisely one gallon.
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