Riddle:
In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them.
How will you do it?
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Hint:
There is simple answer you may not have thought about...
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Answer:
It's impossible!
You cannot measure an odd number of liters when we only have jars that hold odd amounts.