What tile should replace the question mark?
Scroll down for a clue and further down for the answer.
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Clue: Superimpose the first and second images to produce the third image for each row and column. A process needs to be applied to the overlapping features to produce the third images.
Scroll down for the answer.
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Answer: Tile ‘A’ should replace the question mark. To produce the third column or third row, you need to retain the lines that overlap when the first and second images are superimposed. Flip the result along the x-axis to produce the final image.
Applying this logic to the third row, the first and second large squares both contain the horizontal line and the dot on the upper right side. When these features are flipped along the x-axis, ‘A’ is produced.
Puzzle a Day 