Brain teaser: Only a maths mastermind can crack this puzzling equation in under 10 seconds

Brain teasers are the perfect way to give your mind a workout, and when it comes to maths brain teasers, the challenge is ...
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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, ...