There are three main types of optical illusions: literal, physiological, and cognitive. According to research, regular practise of optical illusions can improve concentration and prevent cognitive decline in adults. You need to observe the image carefully and spot the odd shape in 6 seconds. Wondering where the odd shape is? Find Odd Shape in 6 Seconds - SolutionThe odd shape can be spotted in the extreme right corner of the image.

Source: Dainik Jagran July 30, 2023 11:59 UTC