Tue
Sep
21
Tuesday Teaser #22
This week’s puzzle is a variation on a classic, courtesy of this nice collection of brainteasers: A pack of cards has 52 cards. You are in a dark room with this pack of cards. You have been told that inside the pack there are 42 cards facing down, 10 cards facing up. You have been asked to reorganize this pack of cards into two decks – so that each deck contains an equal number of cards that face up. Remember, you are in the darkness and can’t see. How will you do it?
