If two of the 64 squares are chosen at random on a chess board, the probability that they have a...

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If two of the 64 squares are chosen at random on a chess board, the probability that they have a side in
\( \mathrm{P} \) common is

W.
(1) \( 1 / 9 \)
(2) \( 1 / 18 \)
(3) \( 2 / 7 \)
(4) \( 1 / 3 \)
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