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Challenge: find all 7s in the picture in just 20 seconds

How about enjoying a game of optical illusion to check how your vision and your brain are doing?

Those who can solve the puzzle below in less than 20 seconds are considered people with the eyes of a hawk and the brain of a genius. Interestingly, this challenge was used in a study, which revealed that only 1% of participants were able to solve the test with real success.

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So, can you make it into that 1%? Keep reading!

Find the 7s in the image in a maximum of 20 seconds

The test below is a classic optical illusion that can only be solved by the perfect combination of an active brain and a sharp pair of eyes.

Some people who have already performed it have seen only 1 seven, while others have identified 17, 28, 19, etc. But, what about you, how many sevens can you find? take a good look at image below and check:

the optical illusion
Photo: Image/Reproduction

How many sevens did you recognize in the image above? Or rather, was it possible to identify the number in the middle of several letters Z? It is indeed necessary to have good observation and perception skills to solve this challenge.

the verdict

If you counted 17 sevens in the image, you successfully won the challenge. Congratulations, your vision + brain combination is working perfectly.

However, if you didn't manage to win, don't worry, because you weren't the only one and you won't be the last one to fail.

A good tip to overcome this game is to carefully analyze each line. While there is a time limit attached, don't get stuck there. Act in your own time and don't risk finding the numbers randomly.

How about we try again after the tip above? Go back to the photo, look line by line and mark seven by seven until you reach the result.

The answer

Now let's check where all these challenge numbers are in the image below:

the optical illusion
Photo: Image/Reproduction

See how there really are 17 sevens in the picture?

If you liked this challenge, send it to your friends and family and see if they are as smart or smarter than you!

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