In how many ways is it possible to choose a white square and a black square on a chess board so that the squares must not lie in the same row or column -
Correct Answer: Option(d)
Solution: We know a chess board has white and black squares, we need to select white square out of these white squares that is done in which is
No, we have selected any one white square, there are eight black squares lying in the same column or row so out of black squares
We need to select one black square that is
So, if both squares selected then our work is done
Hence it is in ways.