Number of squares of all dimensions of `5xx7` game board

Number of unit squares in a chess board 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=?

The number of squares of any size in following grid of 10xx7, is

The number of squares that can be formed on a chess board is

If three squares of dimension 1xx1 are selcted at random from the chess board , then the probability that they form the letter L is

(i) Find the number of reatangles of any size in a chess board (ii) Find the number of squares of any size in a rectangle of size 8xx 5 .

(i) Find the number of reatangles of any size in a chess board (ii) Find the number of squares of any size in a rectangle of size 8xx 5 .

Find the number of squares in chess board.