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jee king king Grade: 12
        

The 9 horizontal and 9 vertical lines on an 8X8 chessboard form 'r' rectangles& 's' squares. The ratio of s/r in the lowest terms is?

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear jee king


number of rectangles = r = 9C2 *9C2  =1296


number of square=s = (12 + 22 + 32 + ................+ 82 ) =204


 


so s/r =204/1296






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7 years ago
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