A recent internet challenge involved finding an odd number among rows of the number 41 presented in various colors. This optical illusion aimed to test cognitive skills and visual perception. Participants had to spot the anomaly within 10 seconds, offering both mental excitement and a break from routine online activities. A recent internet challenge involved finding an odd number among rows of the number 41 presented in various colors. This optical illusion aimed to test cognitive skills and visual perception. Participants had to spot the anomaly within 10 seconds, offering both mental excitement and a break from routine online activities. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle