Find the hidden 5 among the grid of 2s within 5 seconds. If you can spot the camouflaged number in this optical illusion image within the time frame, you may have an above-average IQ. Subscribe ...

The “World’s Shortest IQ Test” Has Only 3 Questions – But Can You Get Them Right? Find out if you can beat the scores of people at Harvard and Princeton. Holly Large. Holly Large.