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Test your observation skill in this 9-second brain teaser challenge to spot the hidden number 3!
An optical illusion brain teaser tricks the brain into perceiving something different from reality by exploiting how our visual system processes information. These illusions manipulate light, colour, ...
An optical illusion is a visual phenomenon where our eyes perceive something differently from reality, tricking the brain into misinterpreting what it sees. These illusions occur because the brain ...
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