KöMaL 2007 K135
Two decks of 32 German cards in each are shuffled separately, and one deck is placed on the top of the other. Then for each card in the upper deck its counterpart is found in the lower deck. The cards lying between the two cards are counted and the numbers obtained in this way are added. What will be the result?
Official text KöMaL. Quoted with source.
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