Brainteaser for January 13, 2012

Brainteaser for January 13, 2012 Question: In a box you have 13 white marbles and 15 black marbles. You also have 28 black marbles outside the box. You remove two marbles randomly from the box. If they are of different colors you put the white one back in the box. If they are the same color you put a black marble in the box. Continue this until only one marble remains in the box. What color is the last marble? Click here to check your answer. Find more Brain Teasers, Puzzles and Games to challenge the mind at The Brainteasers Network

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