Optical illusions are a fun and engaging way to challenge your brain and visual perception. They often reveal how our eyes can deceive us and how our brains work to make sense of complex patterns. Today, we bring you a mind-bending optical illusion challenge that is designed to test both your vision and your attention to detail.

In this particular challenge, your task is simple—but you only have 6 seconds to do it. You’ll see a grid of numbers—14 rows and 8 columns, to be exact—where every visible number appears to be 247. But hidden somewhere among these seemingly identical digits is the number 274. Your job? Find 274 as quickly as you can.

Sounds easy? Not quite!

The close resemblance between the numbers 247 and 274 plays a trick on your brain.

Since the numbers share the same digits, your eyes can easily skim over the subtle difference, making the odd one out extremely hard to spot. That’s what makes this challenge so thrilling—and so difficult!

Optical illusions like this one play on pattern recognition—a process your brain is constantly doing to help you make sense of your surroundings quickly. In this challenge, once your eyes detect a repeated pattern of “247,” your brain automatically starts filtering out every similar group of numbers. So unless you’re paying very close attention, you’re likely to miss the “274” altogether.

Are You Ready?

Take a deep breath, focus on the image, and set your timer for 6 seconds.

Can you find the number 274 before the time runs out?

(Scroll slowly and try to spot it without peeking ahead.)

Still Searching?

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Stop! Time’s over

Here’s the Solution to the Optical Illusion Challenge:

If you couldn’t find it, don’t worry—you’re not alone.

Many people struggle with these types of illusions the first time.

The number 274 is cleverly hidden in the 7th row of the image, standing out ever so slightly from the surrounding 247s. To make it easier, it’s circled in the solution image provided.