How Many Squares on a Chessboard? || Solution Explained

Details : You are provided with a chessboard and are asked to find the number of squares in it. A chessboard is a board with 8 x 8 grids.

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Solution: Looking closely at the chessboard we can see that in addition to the 1 x 1 squares, there can be a combination of 2 x 2, 3 x 3, 4 x 4, 5 x 5, 6 x 6, 7 x 7, and 8 x 8 squares too. To get the total number of squares we need to find all the squares formed.

1 x 1: 8 * 8 = 64 squares.
2 x 2: 7 * 7 = 49 squares.
3 x 3: 6 * 6 = 36 squares.
4 x 4: 5 * 5 = 25 squares.
5 x 5: 4 * 4 = 16 squares.
6 x 6: 3 * 3 = 9 squares.
7 x 7: 2 * 2 = 4 squares.
8 x 8: 1 * 1 = 1 square.

Therefore, we have in all = 64 + 49 + 36 + 25 + 16 + 9 + 4 + 1 = 204 squares in a chessboard.