Thursday
December 18, 2014

Homework Help: Math

Posted by Sarah on Thursday, May 16, 2013 at 7:21pm.

The squares of a 2500 chessboard are coloured black and white in the standard alternating pattern. k of the black squares are removed from the board at random. What is the minimum value of k such that the expected number of pieces the chessboard is divided into by this process is at least 20 ?

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