Optical illusion IQ test: Only the quickest minds can see the hidden 5 among the 2s under 5 seconds
The fascination with optical illusions dates back to Greek philosophers like Epicharmus, Protagoras, Plato, and Aristotle, who first explored how our eyes, brain, or a combination of both can deceive us into perceiving things that are not actually there.
In the 19th century, psychologists Johannes Mueller and J.J. Oppel reignited their interest in optical illusions and conducted extensive studies on the subject.
Around the same time, German physicist Hermann von Helmholtz termed 'cognitive illusions" as an illusion which occurs when our expectations of reality conflict with what we actually see.
Later, it was categorised into four types: distorting, paradoxical, fictional, and ambiguous.
If you find optical illusions fascinating, try challenging your brain with this visual IQ test.
Optical illusion IQ tests are an excellent way to assess your intelligence by measuring how quickly you notice subtle details.
In the image below, number 5 is hidden within a grid of 2s. You have to spot the camouflaged number within 5 seconds. Take this visual IQ test to find your congnitive speed
This type of puzzle challenges the brain's ability to detect subtle changes in shapes and patterns quickly. It is an excellent way to test your visual perception and cognitive processing speed.
Close your eyes and relax. Now, open them and focus on the image given below. Can you spot it within 5 seconds? Look closely—it is cleverly camouflaged! Only individuals with sharp eyes can spot the hidden number
It is placed somewhere on the right side.
Did you find the hidden 5 among the grid of 2s within 5 seconds? Here is the answer
Upon closer look, you will find the number "5" camouflaged in the upper right portion of the image. More precisely, it is located in the 4th row from the top and the 7th column from the right.
If you enjoyed this optical illusion IQ test, do not forget to check out more mind-bending challenges in our collection. Share it with your friends and loved ones to see how fast they can spot the hidden number too!
Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles
Fibre2Fashion
19 hours ago
- Fibre2Fashion
Tailorlux & German Plastics Centre-SKZ kick off KIMaTex project
In the KIMaTex research project, Tailorlux GmbH and the German Plastics Centre - SKZ are developing a system that can reliably identify components like elastane or PET and contaminants like PFAS in textiles. The goal: to make this information available for circular and traceable product passports. The project combines a measurement system that captures both spectra and images and analyzes them with artificial intelligence (AI) to derive the textile composition. This innovation addresses major challenges in the textile industry, such as traceable quality and reuse—helping companies cut costs and drive forward a circular economy for textiles. The KIMaTex project by Tailorlux and SKZ aims to develop an AI-powered system that detects textile components like PET, elastane, and PFAS for circular product passports. Using spectral and image data, the tool enables on-site, accurate textile analysis. Funded under Germany's ZIM programme, it supports recycling and traceability to advance the circular textile economy. An innovation in the field of measuring systems for the textile circular economy With several hundred million tons of textile fibers produced in Europe alone, the textile industry is a major sector with huge innovation potential. Today, most textiles are either incinerated or landfilled at the end of their life cycle. Why? Because of the complex mix of materials like polyester, cotton, and chemical finishes, which makes recycling economically unfeasible. To make matters worse, many of these materials look very similar to the human eye, making them hard to distinguish. This is where the KIMaTex research project comes in. The goal is to develop a digital measurement system powered by artificial intelligence that can reliably detect things like PFAS contamination or the presence of PET and elastane in textiles. This system will provide accurate, on-site analysis of real materials—making it possible to identify what textiles are truly made of. Unlike current software platforms, which often operate without real-world data, this system will provide reliable information about material composition and link it to a traceable product passport. This opens the door to effective sorting and true material recycling—both technically and economically—for the first time. Innovation Driven by SMEs, Enabled by ZIM The joint project 'AI-based Material Analysis in the Textile Value Chain' (KIMaTex) officially launched in January 2025 as part of the ZIM (Central Innovation Program for SMEs) from the German Federal Ministry for Economic Affairs and Energy. ZIM supports small and medium- sized enterprises (SMEs) in developing forward- thinking technologies. The measurement system being developed is a perfect example of a hands-on solution with long-term potential. It tackles a critical environmental challenge while also creating economic value for the textile and recycling industries. At the heart of the project is Tailorlux's TailorScan device, which captures precise spectral data in both the visible and infrared range. These data, combined with images of the textiles, are used by SKZ to develop an AI system that can recognize material types and contaminants. While Tailorlux is responsible for developing the measurement device and gathering the material data, SKZ's digitalization team handles structured data storage, smart data processing, and training of the AI models. Once fully evaluated, the system will be integrated into a user-friendly app that allows fast, intuitive analysis directly on-site—and creates a seamless connection to digital product passports, ensuring textile traceability. Project Details The project is funded by the German Federal Ministry for Economic Affairs and Energy under the ZIM program (Project ID: KK5068053AB4) from January 1, 2025 to November 30, 2026. Note: The headline, insights, and image of this press release may have been refined by the Fibre2Fashion staff; the rest of the content remains unchanged. Fibre2Fashion News Desk (HU)
&w=3840&q=100)
Business Standard
21 hours ago
- Business Standard
AI takes over Gripen E fighter jet in dogfight trial against real pilot
Swedish defence contractor, Saab, on Wednesday announced that it has conducted successful testing of an artificial intelligence (AI) system piloting a Gripen E warplane in combat scenarios against a real fighter pilot, Reuters reported. The combat testing was done by Saab and a German defence startup, Helsing. It marks a step forward in Europe's effort to compete on autonomy in defence. The trial has also become the first- publicly known instance of AI being tested in a warplane beyond visual range (BVR) rather than in close-range dogfights or on a test aircraft. It was also the first time AI controlled a fully operational jet. The European trials, known as 'Projects Beyond', were carried out between May 28 and June 3 and included three flights, the last of which pitted Helsing's 'Centaur' AI agent piloting a Gripen E against a human-operated Gripen D fighter jet, the report added, citing a statement from the companies. Projects Beyond was funded by the Swedish government, and while the trial remained inconclusive in regards to who performed better, the AI pilot jet or the human top gun, it did indicate an increasing focus on integrating AI and autonomy into combat systems. Saab's Chief Innovation Officer Marcus Wandt, a Swedish astronaut and ex-fighter pilot, told journalists, 'I would say it is not a given who will win... you have to be on your game as a pilot.' Wandt further said, 'If you need to retrain for a new weapon system or new tactics, it will be difficult to stay on par. Right now, there are still pilots out there that will have a chance, but that will change fast.' The trial comes at a time when Saab is exploring new concepts for the next generation of combat jets, which is likely to feature a mix of crewed and uncrewed aircraft, under Sweden's KFS future air combat study.
Mint
2 days ago
- Mint
Optical illusion IQ test: Only the quickest minds can see the hidden 5 among the 2s under 5 seconds
The fascination with optical illusions dates back to Greek philosophers like Epicharmus, Protagoras, Plato, and Aristotle, who first explored how our eyes, brain, or a combination of both can deceive us into perceiving things that are not actually there. In the 19th century, psychologists Johannes Mueller and J.J. Oppel reignited their interest in optical illusions and conducted extensive studies on the subject. Around the same time, German physicist Hermann von Helmholtz termed 'cognitive illusions" as an illusion which occurs when our expectations of reality conflict with what we actually see. Later, it was categorised into four types: distorting, paradoxical, fictional, and ambiguous. If you find optical illusions fascinating, try challenging your brain with this visual IQ test. Optical illusion IQ tests are an excellent way to assess your intelligence by measuring how quickly you notice subtle details. In the image below, number 5 is hidden within a grid of 2s. You have to spot the camouflaged number within 5 seconds. Take this visual IQ test to find your congnitive speed This type of puzzle challenges the brain's ability to detect subtle changes in shapes and patterns quickly. It is an excellent way to test your visual perception and cognitive processing speed. Close your eyes and relax. Now, open them and focus on the image given below. Can you spot it within 5 seconds? Look closely—it is cleverly camouflaged! Only individuals with sharp eyes can spot the hidden number It is placed somewhere on the right side. Did you find the hidden 5 among the grid of 2s within 5 seconds? Here is the answer Upon closer look, you will find the number "5" camouflaged in the upper right portion of the image. More precisely, it is located in the 4th row from the top and the 7th column from the right. If you enjoyed this optical illusion IQ test, do not forget to check out more mind-bending challenges in our collection. Share it with your friends and loved ones to see how fast they can spot the hidden number too!
