Everyone sees the pile of test papers – but you’ve got a high IQ and 20/20 vision if you spot a calculator in 5 seconds

SCHOOL may be winding down for the year, but there is one last assignment – to find the calculator hidden among the test papers.

Only top students with a high IQ are able to spot the number cruncher in the illusion in under five seconds.


Can you find the hidden calculator among these tests?Credit: Solar Tuition

The picture shows multiple pens and papers which have all been graded as A+.

However, somewhere among the papers and stationary, is a hidden calculator.

Locating the calculator is made even more difficult since the entire image is made up of monotonous beige papers with the interspersing of red and blue pens.

Still stumped? Well, here is a clue — the answer to the test can be found toward the middle of the picture on the right-hand side.

READ MORE on Optical Illusions

The school-themed brain teaser was created by Dr. Lawson, a tutor at London-based Solar Tuition, as a way for his students to relax their brains ahead of exam time.

Benefits of brainteasers and optical illusions

Researchers have developed many tests to show how various brain regions react to brainteasers and optical illusions. There are many benefits.

  • They are not only entertaining, but they also shed light on how our brains interpret visual data.
  • By giving your brain a little workout regularly, you enhance your ability to focus and observe details.
  • Studies have shown people who regularly challenge themselves with optical illusions and puzzles see big improvements in their problem-solving skills, concentration, and attention.
  • Improved concentration and attention span can help prevent cognitive decline in old age.
  • Optical illusions can improve eyesight by allowing you to see small print.

“I have seen first hand the benefits of revising and taking regular breaks,” said Lawson. “Taking time to rest allows students’ brains to recharge, leading to improved concentration and retention of information. “

“Ultimately, incorporating breaks into a revision schedule not only promotes academic success, but also physical and mental well-being, so they can tackle their exams head on,” he continued.

Still having trouble locating the pesky calculator? Not to worry, we have included the answer below.

The calculator is located in the gap between quizzes, circled above


The calculator is located in the gap between quizzes, circled aboveCredit: Solar Tuition

Want to further test your brain power? Have a go at these eye-watering puzzles that will leave you scratching your head.

In this beautiful spring-themed illusion, only those with 20/20 vision are able to see the bee as it goes about pollinating plants.

The illusion is extra difficult because the bumble bee easily blends in with vibrant flowers.

Can you find the bee hidden among the flowers?


Can you find the bee hidden among the flowers?Credit: 88 Casino

The science behind optical illusions

This brief explanation may help to unscramble your brain…

  • Optical illusions make a little bit more sense when you learn that our eyes have very little to do with what we see and it is our brains that play the key role in creating images and trying to protect us from the potential threats around us
  • Our brain is constantly trying to make sense of the world at the quickest pace it can despite the world being in 3D and the images on our retinas being in 2D
  • It can be really difficult for your brain to interpret everything at once so it will often take shortcuts and give you a simplified version of what you see so you can have quicker reaction times if the object you’re looking at looks dangerous
  • When you look at an object what you’re really seeing is the light that bounced off of it and entered your eye, which is converted into electrical impulses that your brain then turns into an image
  • Our brains can warp straight lines if an object in the middle of them looks like it’s drawing closer as it wants to emphasize the potential threat
  • Different colours and light and dark can make the same sized objects look different or make patterned images look like they’re spinning

If spotting the bee among the flowers was too tough, you could try the final illusion; finding the hidden bear.

The tricky image features around 20 monkeys enjoying their time together in green, leafy bushes.

Are you able to locate the bear that's hidden within a group of chimpanzees within a 3-second time limit?


Are you able to locate the bear that’s hidden within a group of chimpanzees within a 3-second time limit?Credit: Bright Side

Hidden among them is a sneaky bear but only the most quick-witted can spot it within a three-second time limit.

A study conducted by ZenBusiness found that mental puzzles help stimulate the brain and train it to solve problems more efficiently.

“These visual puzzles can give you a good mental workout that can, in turn, help you think more efficiently and solve problems more easily,” states the outlet.

The University of Glasgow also stated that those who regularly partake in optical illusions are more likely to improve their eyesight.

The answers to the last two illusions can be found below if you’ve given up.

The Bear was hiding in plain sight


The Bear was hiding in plain sightCredit: Bright Side
The bee was hiding right at the very bottom of the image


The bee was hiding right at the very bottom of the imageCredit: 88 Casino

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