Measure Milk by Cans Puzzle-Asked in AMTEL interviews.

Question:

There is a drum full of milk.
People come for buying milk in the range of 1–40 litres.
You can have only 4 cans to draw milk out of the drum. What should be the measurement of these four cans so that you can measure any amount of milk in the range of 1–40 litres.

Note that the cans cannot be used more than once.

Solution: 1 3 9 27

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