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January 27, 2015

January 27, 2015

Posted by **john** on Saturday, June 15, 2013 at 10:38am.

Details and assumptions:

>Note: The black squares are not removed with probability 12. Rather, it is given that exactly 30 black squares are removed.

>A square is a neighbour if it is located directly to the left, right, top or bottom of the initial square. Squares that are connected by exactly 1 vertex are not neighbors.

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