Take a good look at the image and try this nostalgic visual challenge before reading the explanation. Can you spot the detail that makes the answer clear?
Try the challenge
Compare each key’s decorative head and count its openings.
Answer and explanation
The answer is row 2, column 3. Eleven keys have three circular openings in their ornate heads. The third key in the second row has only two openings, making it the odd one out.
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