Number of ways of selecting two squares having common side in a chess board is (1 unit size squares)

The number of ways of selecting two having common side in a chess board is

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

Number of unit squares in a chess board is

The number of rectangles which are not squares in a chess board is

The number of rectangles which are not squares formed in a chess board is

Find the number of ways in which we can choose 3 squares on a chess board such that one of the squares has its two sides common to other two squares.

Find the number of ways in which we can choose 3 squares on a chess board such that one of the squares has its two sides common to other two squares.

Find the number of ways in which we can choose 3 squares on a chess board such that one of the squares has its two sides common to other two squares.

Find the number of ways in which we can choose 3 squares on a chess board such that one of the squares has its two sides common to other two squares.