India, Jan. 21 -- This challenging problem is presented as an optical illusion to test how well and how quickly your eyes can identify different numbers, as well as crucial variations in patterns.

If you are aware that finding the odd number is the most important task that should be accomplished through this visual riddle. Now, you have to scrutinize the image and recognize the only number that is dissimilar to the others in every aspect of the pattern. Besides, the time limit of 7 seconds makes it even more challenging since it requires fast and full focus.

By giving yourself a tough competition in this challenge is not simply relying on luck; it assesses your alertness, visual accuracy, and even the slightest differences among the so-...