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A bartender has a three pint glass and a five pint glass. A customer walks in and orders four pints of beer. Without a measuring cup but with an unlimited supply of beer how does he get four pints in either glass?
Fill the 5 pint glass, pour from the 5 pint into the 3 pint glass. now you have 2 pints in the 5 pint glass. empty the 3 pint glass and pour the 2 pints into the 3 pint glass. now fill the 5 pint glass and then fill the final pint of the 3 pint glass by pouring from the 5 pint glass and you'll be left with 4 pints in the larger glass. ALTERNATIVE: Fill the 3 pint glass. Pour the 3 pint into the 5 pint glass. Fill the 3 pint. Pour the 3 pint into the 5 pint until full (1 pint remaining in the 3 pint). Empty the 5 pint. Pour the 3 pint into the 5 pint (1 pint in the 5 pint). Fill the 3 pint. Pour the 3 pint into the 5 pint for a total of 4 pints in the 5 pint glass.
Did you know the answer?
This puzzle is a poem (of sorts) that requires a six-letter word in each line. The six letters never change except in their order: "A ... sat on his ... grey, watching the ... of parting day, and this was his lay: 'Thou ... the weak, Thou ... the strong, to Thee the ... of battles belong.' And the wind with a ... bore off his song."