Challenge: Test your IQ level by finding out the number ‘5131’ in this optical illusion

We’ve got a fun optical illusion that’s going viral online—and it promises to test your observation skills like never before. Your mission is simple (or so it seems): Find the number ‘5131’ hidden in this picture full of similar digits.But here's the twist, most people only spot ‘5151’ at first. So, can you go beyond what the eye shows and challenge your mind to see what’s really there?Before we jump into the challenge, let’s understand why illusions like this are so fascinating. Optical illusions are images that trick your brain. They often use shapes, colors, and patterns to confuse your mind and hide details in plain sight.When you look at an optical illusion, your eyes send signals to your brain. But sometimes, your brain fills in the blanks incorrectly or misses out on the finer details. That’s where your IQ, focus, and observation skills come into play.

Your challenge: Spot ‘5131’ in the image

In the image, you’ll see a block of numbers where ‘5151’ is repeated. That’s what your brain sees immediately, and that’s exactly the trick. But hidden in between those similar-looking digits is one instance of the number ‘5131’.Hint: Don’t look at the whole image at once. Break it down into sections.Still can’t see it?

Here’s a more specific clue:

Focus on the bottom half of the image.That's where the number ‘5131’ is quietly sitting, blending in with its 5151 neighbours.

Why this challenge is good for your brain

These kinds of puzzles aren’t just for fun, they’re also great for your mental fitness. Here’s how:Researchers say that even spending a few minutes a day on puzzles or illusions can help reduce stress, improve memory, and even sharpen your intelligence over time.

Did you find it?

So, were you able to spot ‘5131’? If yes, congratulations! You’ve just proven you have a great eye for detail and a mind that can see beyond the obvious.If you didn’t find it yet, don’t worry. These illusions are meant to be tricky. Scroll down a little more…

Answer reveal:

Look closely at the bottom third of the image, especially in the bottom line. There it is, 5131, hiding in plain sight!