Probability

If four squares are chosen random on a chessboard, find the probability that they lie on a diagonal line.

1 Answers

I think
(4(4C4+5C4+6C4+7C4)+2*8C4)/(64C4)
is the answer.

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Shaswata Roy Are u sure that the 4 points need 2 b different?
Upvote·0· Reply ·2013-03-08 02:43:59
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