Optical illusions are currently trending on social media, testing viewers' concentration and pattern recognition abilities. This particular challenge involves spotting the odd element, '7F8,' hidden among numerous '7E8's within a 10-second time limit. The solution reveals '7F8' located in the 5th row and 8th column, encouraging readers to explore more optical illusions.source https://timesofindia.indiatimes.com/life-style/health-fitness/de-stress/optical-illusion-do-you-have-sharp-observation-skills-spot-the-7f8-in-this-picture-in-10-seconds/articleshow/122838742.cms