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    A baffling optical illusion will put your powers of observation to the test.

    The brainteaser, created by Daily Star with the help of AI, asks you to find the number 99 hiding among the other digits. And it's trickier than it looks!

    Try not to get distracted by all the brightly coloured circles, squiggles and numbers as you give the image a once over. You may also see some pesky 9s and 19s in there throwing you off the scent.

    READ MORE: Optical illusion has hidden animals in snap – but only some people can spot them

    You can read more lifestyle stories from Daily Star here.

    Set a timer to see how long it takes you to complete the eye test. Anyone who is able to spot number 99 in less than 10 seconds has eagle-eyed vision.

    For those who are struggling with the challenge, we’d recommend scanning your eyes across the image from top to bottom. This ensures you don’t miss any of the tiny details.

    And if you still can’t pinpoint the 99, we’d recommend focusing your attention on the left hand side of the image. Scroll down for the answer.

    There are plenty of positives to challenging yourself with tests like this one. Research shows it can even stop your brain from ageing.

    A study by the University of Exeter and King’s College London found similar exercises can brush-up adults’ recall and improve brain function by a decade.

    Some experts also believe they encourage lateral thinking, which can keep us feeling creative and fulfilled. And there's nothing more satisfying than tackling a new problem!

    Are you looking for more optical illusions? Previously, we revealed only people with a "high IQ" can spot the pizza within 11 seconds in this tricky image.

    And on another occasion, a mind-bending illusion tricked people into seeing different shades of gold circles. The brainteaser could leave you feeling as though the gold circles are all different shades.

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    • Optical Illusion

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