Have you ever wondered how sharp your mind really is? Optical illusions are not just fun visuals—they are powerful tools that test our brain’s ability to process information quickly and accurately.
One popular challenge is the “Spot the Number 4 Among 3s” test, which puts your attention to detail and cognitive speed to the ultimate test.
At first glance, the numbers may all look the same, but hidden among the sea of 3s is a single number 4. Your task is to find it in under 8 seconds.
Try this Challenge: Within 8 Seconds Spot The Number 8 among 3
Optical Illusion IQ Test: Are You A Genius? Within 8 Seconds Spot The Number 4 among 3
This optical illusion IQ test challenges your visual perception and quick thinking by asking you to find the number 4 hidden among a group of number 3s within just 8 seconds.
At first glance, the numbers may look almost identical, making it tricky for your brain to immediately spot the difference. The test measures your attention to detail, pattern recognition, and speed of processing visual information.
Because the numbers are so similar, your brain has to focus carefully to distinguish the unique shape of the 4 from the surrounding 3s. Successfully finding the 4 quickly can indicate strong cognitive abilities and sharp observational skills, which are often linked to high intelligence.
This kind of exercise is a fun and simple way to engage your brain and test your mental agility.

Optical Illusion IQ Test: Are You A Genius? Within 8 Seconds Spot The Number 4 among 3 - Solution
The solution to the optical illusion IQ test is that the number 4 is cleverly hidden among the number 3s in the second row, second column from the right.
Because the 4 closely resembles the 3s, it blends in and tricks your brain into seeing only the familiar pattern of 3s. This illusion relies on subtle differences in shape that require focused attention to notice quickly.
By directing your eyes to the second row and carefully scanning each number from right to left, you can spot the distinct angles of the 4 that set it apart.
