Q: If you had an infinite supply of water and a 5 quart and 3 quart pail, how
would you measure exactly 4 quarts?
A: 1. Fill the 5 quart pail,
2. pour the water into the 3 quart pail,
3. empty the 3 quart pail
4. pour the 2 quart water remained to 3 quart pail
5. fill the 5 quart pail
6. pour the water into the 3 quart pail
7. the remaining water in the 5 quart pail is 4 quart
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