More details.

You must solve a_ll of these problems, but you only need to select % to explain in Video 3. On a 8 x 8 checkboard'. with white and black playing pieces: 0 All white pieces are identical and all black pieces are identical 0 A white playing piece can only stand on a white square and a black piece can only stand on a black square 0 A white piece cannot be placed in the same [horizontal or vertical) row as a black piece a Two or more pieces of the same colour can be placed in the same [horizontal or vertical] row One white piece and two black pieces will be placed on the board according to the rules above. a] How many different arrangements of these three pieces are possible? '13] 'Nhat is the probability that when the three pieces are placed on the board while following the rules, none of the pieces will be in the same row (horizontal or vertical] as another piece