Find the number of squares in a chess board of 10×12 Grid instead of 8×8 Grid

(Q). Find the number of squares in a chess board of 10×12 Grid instead of 8×8 Grid.
Solution:-
total number of squares that can be found within an m×n chessboard (m>n) is given by this formula:

   
Here m = 12 & n = 10
Hence required number of square is:
   
= 495          Answer