Everyone can see the 25s – but you have 20/20 vision if you can spot the lone S in under 7 seconds

GIVE your brain a good workout with this tricky brainteaser that will have you staring at your screen until you solve it.

If you can spot the lone 'S' in the mix, you are said to have 20/20 vision.

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Can you spot the 'S' hidden among the sea of 25s?Credit: supplied

Whether you're looking to enhance your cognitive abilities or simply brag to your co-workers, this illusion will test your IQ.

Hidden among a sea of yellow 25s is one lone 'S', which blends in seamlessly.

Put your observation skills to the test and see if you can spot it.

Whether you plan to examine the image number by number or scan it from top to bottom, make sure to set your stopwatch.

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Seven seconds is the impressively quick time to beat for bragging rights on this one.

At first glance, this image, provided by Times Now via MSN.com, appears to be a uniform set of numbers.

However, those with eagle eyes will be able to spot the odd one out instantly.

This brainteaser works by tricking you into thinking all the numbers are the same.

To further add to the confusion, every other 25 is printed backwards.

But rest assured, there is a sneaky 'S' camouflaged in the busy image.

Think you've got sharp eyes- If you can spot the number 78 in this optical illusion in just 7 seconds then you have top-tier vision

Unless your lucky enough to have your eyes fall on the letter instantly, we recommend analysing the pattern carefully to solve this brainteaser.

The visual deception of this image will have you peeling your eyes but the pay off is worth it.

And if you need a hint, we recommend focusing on the bottom of the image.

The lone 'S' can be spotted somewhere in the bottom few rows of numbers.

Another tricky brainteaser features a gnarled tree but only those with high IQ can spot a sleepy cat hiding on it.

How can optical illusions and brainteasers help me?

Engaging in activities like solving optical illusions and brainteasers can have many cognitive benefits as it can stimulate various brain regions.

Some benefits include:

  • Cognitive stimulation: Engaging in these activities challenges the brain, promoting mental agility and flexibility.
  • Problem-solving skills: Regular practice enhances analytical thinking and problem-solving abilities.
  • Memory improvement: These challenges often require memory recall and can contribute to better memory function.
  • Creativity: They encourage thinking outside the box, fostering creativity and innovative thought processes.
  • Focus and attention: Working on optical illusions and brainteasers requires concentration, contributing to improved focus.
  • Stress relief: The enjoyable nature of these puzzles can act as a form of relaxation and stress relief.

If that's still not hard enough for you, then have a go at spotting the hidden broom amongst the clothes in less than five seconds.

Or you can have a go at figuring out the hidden message in this band’s cover art that has confused fans for years.

Lastly, puzzle fanatics have been left scratching their heads trying to find the lost feather in just 12 seconds.

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Coming back to our challenge - were you able to solve the mind-bending optical illusion?

If you are still scratching your head trying to figure out the confusing picture, we've marked the solution for you.

Optical illusion: Find the lone "S" among the number "25"s.
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You are said to have 20/20 vision if you spotted the 'S' in seven seconds or lessCredit: supplied
Watercolor illustration of pink peonies.
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Can you spot the butterfly hidden in this image?Credit: Hopes Grove Nurseries
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Can you spot the heart hidden in this scene?Credit: Instaprint
Illustration of a hidden butterfly among pink peonies.
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The butterfly is barely visible against the background of peoniesCredit: Hopes Grove Nurseries
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