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Lemonink Puzzle

The Puzzle:

I have two glasses the same size. One contains 100 ml of lemonade and the other contains 100 ml of ink.

I take a spoonful of lemonade and stir it into the ink, and then take a spoonful of that mixture and stir it back into the lemonade.

Which glass now contains least of the contents of the other one?

Do you have the answer? Check against our solution!