# Only those with 20/20 vision can spot all the hidden white balls in under 12 seconds

Only those with 20/20 vision can solve this tricky ball-based brainteaser in under 12 seconds.

Brainteasers are a great way to push the mind to its limits. They can come in many different forms. They can be observational, analytical, or mathematical and can be done at almost any time.

This latest brainteaser from Betting.com is an example of an observational brainteaser. The task of each user is to find the white balls in a sea of multicoloured balls in the image above.

According to the creators behind the brainteaser, the average time it takes to complete this challenge is 20 seconds. However, some believe that they can solve this trickly digital challenge in just 12 seconds.

Before scrolling down, look at the image above and time yourself to see how long it takes you to spot them. When you’re done, look below to see if you got the answer right.

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Did you spot all the white balls in time? No worries if not, the answer is in the image above. The balls are scattered all over the square.

There’s one at the bottom four of them are closely grouped together at the bottom of the image while three are in the top half.

One of the reasons why brainteasers like this one are important is not just because they can act as a quick distraction, but some experts believe they could help reduce someone’s risk of dementia.

To try out more brainteasers on Express.co.uk, click here. For something a little bit different, why not try this optical illusion which apparently tells you what your New Year’s Resolution should be for 2024.

Alongside brainteasers, other experts have claimed that regular eye tests could help reduce your risk of dementia. Speaking to Express.co.uk, Dr Allon Barsam said eye health was key to reducing someone’s risk of the disease. They said: “While there is no cure for Alzheimer’s, as people reach old age they often look at ways that can reduce the risk factors associated with it.

“There has been significant research in recent times to understand the possible relationship between eye health and the onset of dementia. Alzheimer’s doesn’t and can’t cause visual or eye problems, but as there is a high level of visual impairment in people with the disease, research suggests it might represent a risk factor.

“If these vision problems can be treated and corrected, it could go some way towards preventing dementia. This means that any intervention that improves a patient’s vision, such as cataract surgery, or even having regular eye examinations might be able to reduce your chances of developing the disease.”

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