In how many ways is it possible to choose a white square and a bla | Filo
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Class 11

Math

Co-ordinate Geometry

Straight Lines

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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.
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