The 9 horizontal and 9 vertical lines on an `8 xx 8` chessboard form 'r' rectangles and 's' squares. The ratio `s/r` in its lowest terms is

If the Number of squares that can be formed in 8xx8 chessboard,so that each square is surrounded by four squares of same dimension is 5K,K=?

Write in terms of factorials. 6 xx 7 xx 8 xx 9

A projectile is thrown at an angle such that the horizontal and vertical velocities are 9.8m/s and 19.6m/s , it strikes at a point distance from point of throw as

Statement-1: Number of rectangles on a chessboard is .^(8)C_(2)xx.^(8)C_(2) . Statement-2: To form a rectangle, we have to select any two of the horizontal lines and any two of the vertical lines.

Statement-1: Number of rectangles on a chessboard is .^(8)C_(2)xx.^(8)C_(2) . Statement-2: To form a rectangle, we have to select any two of the horizontal lines and any two of the vertical lines.

Statement-1: Number of rectangles on a chessboard is .^(8)C_(2)xx.^(8)C_(2) . Statement-2: To form a rectangle, we have to select any two of the horizontal lines and any two of the vertical lines.

Statement-1: Number of rectangles on a chessboard is .^(8)C_(2)xx.^(8)C_(2) . Statement-2: To form a rectangle, we have to select any two of the horizontal lines and any two of the vertical lines.

Statement-1: Number of rectangles on a chessboard is .^(8)C_(2)xx.^(8)C_(2) . Statement-2: To form a rectangle, we have to select any two of the horizontal lines and any two of the vertical lines.