Can you put 14 crosses in a 6 by 6 grid so that there are an even number of crosses on each row and column?
An elementary school teacher asked me for help with this. Below is a photo of the book they are using. The text is in Swedish and it says "Draw 14 crosses in the grid so that there is an even number of crosses in each horizontal and vertical row". I already gave my answer to the teacher, so why don't you try to solve it!