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(i)If four squares are chosen at random...

(i)If four squares are chosen at random on a chess board, find the probability that they lie on diagonal line.
(ii) If two squares are chosen at random on a chess board, what is the Probability that they have exactly on corner in common?
(iii) If nine squares are chosen at random on a chess board, what is the probability that they form a square of size 3x3?

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