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• If you had an infinite supply of water and a 5 quart and 3 quart pail, how would you measure exactly 4 quarts?

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1. Submitted By: Tapun — October 11, 2006 +20 votes   + -

   A = 5q
   B = 3q
   [A B] q level

   You pour water into A [5 0] … pour from the A into B till B fills [2 3]… empty B [2 0] … pour the the 2q from A to B [0 2]… fill up A [5 2]… now pour from A to B till B fills [4 3]…

   Voila… you have 4q in A

3. Submitted By: srinivas — October 12, 2006 +19 votes   + -

   first fill 3 qart pail and pou that into 5 qart pail
   Then again fill 3 qart pail and pour into 5 qart pail but 5 qart pail takes only 2 qart remaining 1 qart.
   Then all the water in 5 qart pail was emptied and pour the remaining 1 qart water of 3 qart pail in to 5 qart pail
   And again fill 3 qart pail and pour that into 5 qart pail .
   So right now there are 4 qart water in 5 qart pail

4. Submitted By: jan — June 2, 2007 +3 votes   + -

   fill 5, pour it in 3, 5 left with 2q
   pour out 3, pour 5 into 3, 3 has 2q
   fill 5, pour it in 3 until 3 fills to brim
   now 5 has 4q

5. Submitted By: Karveer — August 10, 2007 not yet rated   + -

   5 qt pail 3 qt pail
   5 -> 3 qt. -> 3
   (2remain) (3 qt….throw it)

   ………………..
   (0 remain) -> 2 qt. -> 2 qt
   ……………
   take newly
   5 qt -> 1qt -> so that (2+1=3)
   ..
   4qt. remains

6. Submitted By: Swapnil Dipankar — August 16, 2007 +1 votes   + -

   5 qt - A, 3 qt - B

   1. Fill up the A completely. A has 5 qt, B has 0 qt.
   2. Pour water from A to B till B is full. A has 2 qt, B has 3 qt.
   3. Empty B and pour from A to B. A has 0 qt, B has 2 qt.
   4. Fill up A completely. A has 5 qt, B has 2 qt.
   5. Pour water from A to B till B is full. A has 4 qt, B has 3 qt.
   6. Empty B, you are left with 4 qt in A.

7. Submitted By: Correct — November 28, 2007 not yet rated   + -

   5 Pail, 3 Pail

   Activity1: Fill 5 Pail using 3 Pail
   Fill 5 Pail using 3 Pail. After 2 rounds 5 quart water is in 5 pail & 1 quart water in 3 pail ( 3*2 = 5+1).

   Activity2 :Empty 5 Pail
   Activity3: empty pail 3 into pail 5
   Activity4: Fill pail 3 & empty into pail 5

   Pail 5 now has 4 quarts

8. Submitted By: srividya — March 1, 2008 -1 votes   + -

   5 pail + 5pail=10 pail
   remove 3 that is 7 now
   remove 3 that is 4 now

10. Submitted By: Jonathan Altieri — May 12, 2008 not yet rated   + -

    Get the 3qt pail and use it to fill 5qt pail. 3+3=6. So, what you have in the 3qt pail is exactly 1qt. Now, empty the 5qt pail and pour in the 1qt, now pour a full 3qt, and there you have it.

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