A new optical illusion featuring repeated words has gone viral, challenging users to spot one odd word hidden among dozens of PENs. Think you can do it in under 10 seconds?

Can you spot the odd word out? Here, we see a pic with the word pens written all over it. The words are really striking since it they written in white over a black background.

In the optical illusion, you should focus on the following aspects to spot the odd word: Letter Differences: Look for letters that do not match what a proper "PEN" should look like.

Find the hidden Word Red in this Optical Illusion IQ Test They say a high IQ reveals itself in the smallest of details—and this optical illusion is the perfect way to put that to the test.

A deceptively simple optical illusion is challenging internet users to find all the hidden '3's within a seemingly straightforward series of numbers a ...

Try: How High is Your IQ? Find the hidden Word Red in this Optical Illusion IQ Test Optical Illusion: Find the Hidden Odd Word in 9 Seconds Source: MINT So, how are you doing Sherlock?

Can you spot 4052 hidden among 4502s? This optical illusion is a real eye test The number 4052 is cleverly hidden in the grid.

The Best Illusion of the Year contest offers researchers, and participants, an opportunity to explore the gaps and limits of human perception.

Only those with 20/20 vision & the eyes of a referee can solve this baffling optical illusion in under 60 seconds Scroll down for more tricky illusions and brainteasers ...

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