Number of ways in which 3 squares of unit length can be chosen on a 8 x 8 chessboard, so that all squares are in same diagonal line, is

Find the number of ways 2 squares can be chosen out of 8xx8 chess board such that they have only one corner in common.

In how many ways can two squares be chosen on a 8 xx 8 chessboard such that they have only one corner in common?

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=?

Find the number of ways in which two small squares can be selected on the normal chessboard if they are not in same row or same column.

Find the number of ways in which two small squares can be selected on the normal chessboard if they are not in same row or same column.

Find the number of ways in which two small squares can be selected on the normal chessboard if they are not in same row or same column.

Find the number of ways in which two small squares can be selected on the normal chessboard if they are not in same row or same column.

If 4 squares are chosen at random on a chess board, the probability that they lie on a diagonal line is

If 4 squares are chosen at random on a chess board,the probability that they lie on a diagonal line is

If four squares are chosen at random on a chess board, then the probability that they lie in a diagonal line is