View Answer & Explanation
Working in rows, left to right, top row then bottom, one black circle is added each time, with the positions of the circles moving (1/4) turn clockwise each time.
In each row of the diagram, the numerical value of the middle letter equals the sum of the left and right hand numbers, subtracting 3.
In each diagram, there are 2 lines of black dots, joining two sides together. The sides joined by the dots moves 1/4 turn clockwise as you move from left to right.
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