India, July 3 -- Optical illusions are fun. They challenge how we see things. In a viral X (formerly Twitter) post, we can spot an image full of the number 6 repeated in neat rows. But there is a twist. One 0 is hiding among all the 6s. Can you spot it?

This brain teaser is harder than it looks. At first glance, everything seems the same. But if you look closely, you will notice something different. One of those digits is not a 6; it is a sneaky 0.

The number 6 and the number 0 look very similar. Both are round. Both use the same white font. That is why your eyes get tricked.

Your brain loves patterns. When it sees rows of 6s, it expects all to be the same. It stops looking for changes. That is where the illusion wins. It hides the tru...