There are 3 empty teacups on the table. Can you put 10 lumps of sugar in them so that there would be an odd number of lumps in every cup.
Three cups puzzle
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Three Cups Puzzle
Put 7 lumps in 1 cup. 2 Lumps in 2 cup. 1 lump in 3 cup. Now put 3 cup in 2 cup. Now there are 3 lumps in 2 cup.