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akhil_o (2709)

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Olaaa!! Perrrfect answer. 435  [702 rates]

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Just count all the L shapes possible...
now in a 2x2 square there are 4 L shapes
so to count all 2x2 squares
consider row of 8 squares
so to choose 2 consecutive squares, 7 ways
similarly vertically 7 ways

so 7*7=49 total 2x2 boxes
so
49*4=196 total Ls
so P=196/64C3

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