Do you like math puzzles and optical illusions? See if you can find a number other than 444. Can you do it in less than 10 seconds? Are you ready for the challenge? It’s time to test your insight.

On the Internet, one frequently finds various mathematical equations, riddles or images that test your sense of observation. The optical illusion below has already been shared on several sites, so we decided to test our readers’ vision as well.

At first glance, it looks like the image contains 11 columns with the number 444. But if you look closely, you’ll quickly spot an exception. In one of the rows hides the number 474, can you find it? You have to be really attentive to spot it in less than 10 seconds. But a true keen observer will surely be able to spot it.

Are you ready ? Go! You have 10 seconds and don’t forget you can click on the image to see it larger.

Did you find the number 474? If you didn’t find it, keep in mind that repeating the 4 may have made you dizzy. Finding the 474 among so many lines of 4 can make the 444 seem like it’s moving all around. This makes finding the seven almost impossible. If you’re still looking for it, look at the columns on the left side of the image. And you still can’t find it, here is the solution!

According to the site Freshers Live, where this optical illusion first appeared, such puzzles show us if we are capable of paying attention to the smallest details in our daily lives. These optical illusions help develop observational and visual skills. In addition, optical illusions improve concentration and visual abilities. That’s why it’s good to tackle such puzzles regularly.