The term "illusion" is derived from the Latin word "illudere," which means to mock or deceive. Therefore, the basic premise of an optical illusion is to fool the human brain by tricking it.
Optical illusions can be created by manipulating colours, shapes, and patterns to create an image that appears to be different from reality. Optical illusions can be used for entertainment purposes as well as an effective tool for research related to psychoanalysis.
Optical illusions are known to stimulate the brain and enhance an individual's cognitive abilities. These are a great medium to challenge your brain and improve your problem-solving skills.
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Find the Inverted 74
Today’s optical illusion challenge will test the clarity and sharpness of your vision.
This mind-bending optical illusion challenge has left users perplexed, as the challenge is to find the inverted 74 in 13 seconds.
As easy as it may sound, it is not so; readers have a tough time spotting the inverted 74.
You have 13 seconds to spot the number and clear the optical illusion test.
Regular practice of optical illusion tests can help enhance concentration and improve problem-solving skills. These can also prevent cognitive decline in older individuals.
These puzzles also have a calming effect on the mind, thereby significantly reducing stress and anxiety levels.
The inverted 74 has blended expertly with the 47s in the picture, making it hard to identify at first glance.
Only the most intelligent and highly attentive individuals can identify the inverted 74 within 13 seconds.
Have you spotted the number?
Need a hint?
Here you go: The number is not on the right side of the image.
Hurry up; time is running out.
Two…
One…
And…
Time’s up.
How many of you have spotted the inverted 74 within 13 seconds?
Congratulations to those readers who have identified the number; this demonstrates your superior observational skills and a brilliant mind.
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Optical Illusion Test: Solution
The inverted 74 is shown on the left side of the picture, in the 5th column from the left.

Wasn’t that fun?
If you loved this optical illusion challenge, do not forget to try out other puzzle challenges below.
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