Optical illusion: Only those with extraordinary IQ can spot the odd number hidden among 57s
An optical illusion showed a grid of numbers where one digit differed from the rest, leaving viewers puzzled as they tried to spot the odd one out.
Optical illusion puzzles are loved by people of all ages. They have a way of engaging the mind and testing how sharp our eyes really are. Whether it is spotting a hidden figure in a photo or identifying a small difference in a pattern, these illusions continue to be a favourite online.

(Also read: Optical illusion: Only 5% of sharp-eyed people can spot all hidden numbers in this tricky puzzle)
For those who enjoy such mind-bending challenges, we have a special treat in store. Unlike traditional puzzles, this one has been uniquely created with the help of artificial intelligence.
Spot the odd number out
The puzzle seems simple at first glance but is far trickier than it looks. The image is filled with multiple appearances of the number “57.” However, among all the identical figures, one number is different. The task is to scan through the picture carefully and identify the odd one out.
The design is made in such a way that the eye quickly adjusts to the repetition, making it easy to miss the difference.
Why these illusions catch attention
Optical illusions like this continue to capture attention because they test our observation skills in a playful and engaging way. They are simple to try, need no prior knowledge, yet demand focus, patience and a sharp eye.
These puzzles hold people’s interest because they spark curiosity. Most of us do not like to give up until we discover the answer, which makes the challenge addictive. And when the hidden detail is finally spotted, the sense of satisfaction feels like a small personal victory. That feeling of achievement is what keeps such illusions so popular online.
Have you found it yet?
So the big question is, have you managed to spot the odd number? If you have, well done, your observation skills are clearly sharper than most. If not, the fun is in trying until you do.
ABOUT THE AUTHORMahipal Singh ChouhanMahipal Singh Chouhan is a Senior Content Producer at Hindustan Times Digital, with nearly five years of experience in digital journalism and content production. His work primarily focuses on offbeat and trending stories that reflect everyday experiences and evolving conversations on the internet. He has consistently worked on transforming viral content and human interest stories into structured news pieces that engage readers while maintaining editorial clarity. At Hindustan Times, Mahipal contributes to identifying and developing stories emerging from social media trends, online communities, and real-world incidents that capture public attention. His approach involves adding context and journalistic perspective to fast-moving digital narratives, helping present viral moments in a clear and reader-friendly format suited for digital audiences. Before joining Hindustan Times Digital, he was associated with DNA India, where he gained experience in newsroom workflows and digital storytelling practices. Mahipal holds a degree in Journalism and Mass Communication from the Vivekananda Institute of Professional Studies, Delhi. He is particularly interested in tracking emerging trends and understanding how online conversations evolve into broader public discussions. His work reflects a focus on accuracy, readability, and relevance in the rapidly changing digital news environment. Outside of his professional responsibilities, Mahipal takes an interest in history and sports and regularly works on improving his general knowledge, which complements his curiosity as a media professional.Read More

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