New Delhi, July 16 -- Optical illusion puzzles are an enjoyable and quick method to assess the coordination between your brain and eyes. One puzzle going viral on social media is all about testing your visual skills and focus. Your only task is to locate the number 5131 concealed among numerous 5151s, and you have exactly five seconds to complete the challenge.

While the task may seem simple, there's a twist: the figures are quite alike. The sole distinction is the third digit, and as your eyes scan countless rows of nearly identical figures, it's simple to overlook that small variation.

Also read: Only sharp eyes can find the hidden cheese in this mind puzzle

This type of visual riddle engages your brain's ability to recognise pattern...