A tricky challenge showing three lines of numbers has gone viral after internet users were asked to identify the mistake.

In this challenge, you are asked to look very carefully at the picture below and let us know if you spot anything odd about it.

There is a mistake hiding in the viral picture – But can you spot it? Is the mistake hiding somewhere in the lines filled with numbers? Or is the mistake perhaps in the title or the background of the pic?

Before we reveal the solution, take another close look at the picture. If you’re determined to solve the challenge on your own, we urge you to focus on the numbers and their position in particular.

In the picture below, we have circled the mistake that left the viewers baffled.

As it happens, the order of numbers is wrong in the second half of the second line of numbers, whereas number 6 appears before number 5.

While many people can’t spot the mistake on their first try, this is actually nothing unusual. Our brains are programmed to simplify things for us, and since we all know how the correct order of numbers should look like, this makes it harder for us to spot the mistake.

Though most viewers can’t unsee the mistake after seeing it once, the majority struggle with spotting it at first glance – especially if they run through the numbers fast.

Did you manage to spot the mistake on your own and without any help from us or the comments? Let us know how long it took you to solve the challenge!

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