Only 2 percent of people can find the 89 in this sea of 99s in less than seven seconds

A new is baffling most people, with only a tiny number able to find the number 89 in less than seven seconds.

The challenge involves attempting to find the number 89 amidst a . Written in purple and on a black background, it is proving incredibly difficult for most trying to solve it.

Incredibly, the vast majority are able to spot the elusive number inside seven seconds. It is reported a huge 98% fault to do it within the time limit, with only 2% smashing it.

People have been left stumped by the teaser, which probably initially appears easy. Its deceptive nature means it looks simple, but is actually much more difficult than it appears.

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Clearly, the 99s are easy to see and human brains are having a hard time making sense of the puzzle, first shown in .

It can be very easy to skip over the number - after all, you are really looking for a number eight hidden inside the dozens of number nines.

If you can spot the 89, you are in the elite who have already tried it. Whilst a little frustrating, it is also a fun way to spend some time in the busy .

Can you spot it? Try and spot the glaring error within 11 seconds and if you do, you will prove to your friends and family that you really do have a sharp brain!

Keeping your active is known to help improve cognitive performance, enhance memory, and help with focus and attention. Some even believe that regular brain workouts can delay the symptoms of dementia. Many use and puzzles as a way to keep their minds active and it’s thought that adding the dimension of speed to these can add to the benefits even more.

In return, by doing them regularly, you'll find that your mind is sharper and that your memory and cognitive abilities improve. Plus, brain teasers are fun – what better way to best your friends than to set the timer and see who can solve it first? Have a go at other optical illusions .