Only those with the ‘highest visual acuity’ can spot the odd number in this sea of nines.
Brainteasers and optical illusions are designed to test your focus and get you to think outside the box by forcing your brain and eyes to work together.
Take a look at the image above and you might think your brain is playing tricks on you, and that’s because it kind of is.
In the image your brain will be distracted by the sea of number nines – but don’t be fooled. It’s only trying to distract you from finding the real thing you’re looking for – number six.
Optical illusions are regarded as one of the simplest ways to determine a person’s intelligence ... Read even more
