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Friday, July 20, 2012

Friday Puzzle

Lots of great, yet simple, card puzzles out there. For a Friday puzzle I'll just re-word one from the 'Math Is Fun' site:

10 cards are placed FACING UP into a normal 52-card deck (42 cards left facing down). The deck is shuffled several times and then handed to a blind man. He is asked to now divide the deck into 2 piles (of any sizes) such that each pile have the same number of cards facing up.
How can he do it?

For the answer, shuffle over to:

http://www.mathsisfun.com/puzzles/cards-facing-up-solution.html

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