Your task is to find the hidden number sequence within 39 seconds. No you need to know that this is not about guessing but training your visual focus. Optical illusion puzzles are often used as ...
A number sequence has gone viral on the internet this week, reading: 2, 6, 12, 20, 30, ?. At first glance, it looks easy, but once people start solving it, they realize spotting the pattern is not so ...
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